🎉 Improved cursor rules and expanded logging system across backend files. 🖥️📝

.cursorrules

@@ -1 +1,671 @@
- 
+# MYP Druckerverwaltungssystem - Cursor Rules
+# Mercedes-Benz 3D-Druck-Management-Platform
+
+## 🎯 PROJEKT-KONTEXT
+
+Das MYP-System ist eine cyber-physische Lösung zur Verwaltung von 3D-Druckern mit Smart-Plug-Technologie für Mercedes-Benz. 
+
+**Technischer Stack:**
+- Backend: Flask + SQLAlchemy + SQLite
+- Frontend: Jinja2-Templates + CSS/JS
+- Hardware: Raspberry Pi + TP-Link Tapo P110
+- Deployment: Air-Gapped Production Environment
+
+## 🔑 KERN-PRINZIPIEN
+
+### SPRACHE & DOKUMENTATION
+- **Ausschließlich formales Deutsch** für alle Kommentare, Docstrings, UI-Texte und Dokumentation
+- **Englisch nur für**: Code-Variablen, Funktionsnamen, Git-Commits
+- Umfassende Docstrings nach deutschem Standard
+- Inline-Kommentare für komplexe Logik
+
+### QUALITÄTS-STANDARD
+- **Produktionsreife** bei jedem Commit - keine experimentellen Features ohne vollständige Tests
+- **Zero-Downtime-Code** - jede Änderung muss sofort funktionsfähig sein
+- **Defense Programming** - umfassende Error-Handling und Validation
+- **Performance-optimiert** für Raspberry Pi Hardware-Umgebung
+
+### CASCADE-ANALYSE PROTOKOLL
+Vor jeder Änderung ZWINGEND analysieren:
+```python
+# IMPACT-ANALYSE-TEMPLATE:
+# 1. Betroffene Module: [Liste]
+# 2. API-Endpunkte: [Liste] 
+# 3. Datenbank-Schema: [Änderungen]
+# 4. Frontend-Komponenten: [Liste]
+# 5. Hardware-Integration: [Tapo/Drucker]
+# 6. Session/Auth: [Auswirkungen]
+# 7. Background-Jobs: [Timer/Scheduler]
+```
+
+## 📁 PROJEKTSTRUKTUR-REGELN
+
+### CORE-DATEIEN (NIEMALS OHNE CASCADE-ANALYSE ÄNDERN)
+- `backend/app.py` - Flask-Haupteinstiegspunkt
+- `backend/models.py` - SQLAlchemy-Datenmodelle  
+- `backend/utils/settings.py` - Zentrale Konfiguration
+- `backend/blueprints/` - REST-API-Endpunkte
+
+### DATEI-ORGANISIERUNG
+- **Markdown-Dateien (.md)**: Automatisch in `docs/` speichern (außer README.md)
+- **Upload-Struktur**: Hierarchisch nach Jahr/Monat
+- **Logs**: Strukturiert nach Modulen in `backend/logs/`
+- **Backups**: Automatisch in `database/backups/`
+
+### KEINE WINDOWS-SPEZIFISCHEN DATEIEN
+- Keine .bat, .ps1, .cmd Dateien
+- Keine Windows-Registry-Zugriffe
+- Linux/Unix-Shell-Scripts bevorzugen
+- Cross-platform Python-Lösungen
+
+## 🏗️ BACKEND-ENTWICKLUNG (FLASK)
+
+### BLUEPRINT-STRUKTUR
+```python
+# Standard Blueprint-Template
+from flask import Blueprint, request, jsonify, session
+from backend.models import db, User, Printer, Job
+from backend.utils.permissions import require_role
+from backend.utils.logging_config import get_logger
+
+# Deutsche Kommentare für Business-Logic
+blueprint_name = Blueprint('name', __name__)
+logger = get_logger(__name__)
+
+@blueprint_name.route('/endpoint', methods=['POST'])
+@require_role('admin')  # Berechtigungsprüfung
+def function_name():
+    """
+    Funktion-Beschreibung auf Deutsch.
+    
+    Returns:
+        dict: Antwort-Struktur mit Status und Daten
+    """
+    try:
+        # Geschäftslogik mit deutschen Kommentaren
+        pass
+    except Exception as e:
+        logger.error(f"Fehler in {function_name.__name__}: {str(e)}")
+        return jsonify({'error': 'Detaillierte deutsche Fehlermeldung'}), 500
+```
+
+### DATENBANK-PATTERNS
+```python
+# SQLAlchemy-Modell-Standard
+class ModelName(db.Model):
+    """Deutsche Modell-Beschreibung."""
+    
+    __tablename__ = 'table_name'
+    
+    # Felder mit deutschen Kommentaren
+    id = db.Column(db.Integer, primary_key=True)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    
+    def to_dict(self):
+        """Konvertierung zu Dictionary für JSON-Serialisierung."""
+        return {
+            'id': self.id,
+            'created_at': self.created_at.isoformat() if self.created_at else None
+        }
+    
+    @classmethod
+    def create_with_validation(cls, **kwargs):
+        """Factory-Methode mit Validierung."""
+        # Validierungslogik
+        pass
+```
+
+### HARDWARE-INTEGRATION (TAPO)
+```python
+# Tapo-Controller-Pattern
+from backend.utils.tapo_controller import TapoController
+
+async def control_printer_power(printer_id: int, action: str):
+    """
+    Steuerung der Drucker-Stromversorgung über Smart-Plug.
+    
+    Args:
+        printer_id: Eindeutige Drucker-ID
+        action: 'on', 'off', 'status'
+        
+    Returns:
+        dict: Status und Ergebnis der Operation
+    """
+    try:
+        controller = TapoController()
+        result = await controller.execute_action(printer_id, action)
+        
+        # Logging für Hardware-Operationen
+        logger.info(f"Drucker {printer_id}: {action} - Status: {result}")
+        
+        return {'success': True, 'data': result}
+    except Exception as e:
+        logger.error(f"Tapo-Steuerung fehlgeschlagen: {str(e)}")
+        return {'success': False, 'error': str(e)}
+```
+
+## 🎨 FRONTEND-ENTWICKLUNG (JINJA2)
+
+### TEMPLATE-STRUKTUR
+```html
+<!-- Standard Template-Header -->
+{% extends "base.html" %}
+{% set page_title = "Deutsche Seitentitel" %}
+{% set page_description = "Deutsche Beschreibung" %}
+
+{% block content %}
+<div class="container-fluid">
+    <!-- Deutsche UI-Texte -->
+    <h1>{{ page_title }}</h1>
+    
+    <!-- Form-Validation mit deutschen Meldungen -->
+    {% with messages = get_flashed_messages(with_categories=true) %}
+        {% if messages %}
+            {% for category, message in messages %}
+                <div class="alert alert-{{ 'danger' if category == 'error' else category }}">
+                    {{ message }}
+                </div>
+            {% endfor %}
+        {% endif %}
+    {% endwith %}
+</div>
+{% endblock %}
+
+{% block scripts %}
+<script>
+// Deutsche JavaScript-Kommentare für UI-Logik
+document.addEventListener('DOMContentLoaded', function() {
+    // Initialisierung mit Error-Handling
+});
+</script>
+{% endblock %}
+```
+
+### CSS/STYLING-REGELN
+- **Mercedes-Designsprache** befolgen
+- **Responsive Design** für Touch-Interfaces (Kiosk-Modus)
+- **Accessibility** (WCAG 2.1 AA)
+- **Performance** für Raspberry Pi optimiert
+
+## 🔧 UTILITY-ENTWICKLUNG
+
+### LOGGING-STANDARD
+```python
+from backend.utils.logging_config import get_logger
+
+logger = get_logger(__name__)
+
+def business_function():
+    """Deutsche Funktionsbeschreibung."""
+    logger.info("Vorgang gestartet: {function_name}")
+    
+    try:
+        # Geschäftslogik
+        logger.debug("Zwischenschritt erfolgreich")
+        
+    except ValidationError as e:
+        logger.warning(f"Validierungsfehler: {str(e)}")
+        raise
+        
+    except Exception as e:
+        logger.error(f"Unerwarteter Fehler in {function_name}: {str(e)}")
+        # Error-Recovery-Logik
+        raise
+        
+    finally:
+        logger.info("Vorgang abgeschlossen: {function_name}")
+```
+
+### PERMISSION-SYSTEM
+```python
+from functools import wraps
+from flask import session, abort
+
+def require_role(required_role: str):
+    """Decorator für rollenbasierte Zugriffskontrolle."""
+    def decorator(f):
+        @wraps(f)
+        def decorated_function(*args, **kwargs):
+            if 'user_id' not in session:
+                abort(401)  # Nicht authentifiziert
+                
+            user = User.query.get(session['user_id'])
+            if not user or user.role != required_role:
+                logger.warning(f"Unauthorisierter Zugriff: {session.get('username', 'Unknown')} -> {f.__name__}")
+                abort(403)  # Nicht autorisiert
+                
+            return f(*args, **kwargs)
+        return decorated_function
+    return decorator
+```
+
+## 📊 DATENBANK-STANDARDS
+
+### MIGRATION-PATTERN
+```python
+# Sichere Schema-Änderungen
+def upgrade_database():
+    """Database-Schema-Upgrade mit Backup."""
+    try:
+        # 1. Backup erstellen
+        backup_manager.create_backup()
+        
+        # 2. Schema-Änderungen
+        db.engine.execute("ALTER TABLE...")
+        
+        # 3. Daten-Migration
+        migrate_existing_data()
+        
+        # 4. Validierung
+        validate_schema_integrity()
+        
+        logger.info("Database-Upgrade erfolgreich")
+        
+    except Exception as e:
+        logger.error(f"Database-Upgrade fehlgeschlagen: {str(e)}")
+        # Rollback-Mechanismus
+        backup_manager.restore_latest()
+        raise
+```
+
+### CONNECTION-MANAGEMENT
+```python
+# SQLite-optimiert für Air-Gapped-Umgebung
+def get_db_connection():
+    """Thread-safe Database-Connection mit Connection-Pooling."""
+    return db.engine.connect()
+
+@contextmanager
+def transaction_scope():
+    """Transaction-Manager mit automatischem Rollback."""
+    connection = get_db_connection()
+    trans = connection.begin()
+    try:
+        yield connection
+        trans.commit()
+    except Exception:
+        trans.rollback()
+        raise
+    finally:
+        connection.close()
+```
+
+## 🚀 DEPLOYMENT & PRODUCTION
+
+### SYSTEMD-SERVICE-PATTERN
+```ini
+# Produktions-Service-Template
+[Unit]
+Description=MYP Druckerverwaltungssystem
+After=network.target
+
+[Service]
+Type=notify
+User=myp
+Group=myp
+WorkingDirectory=/opt/myp
+Environment=FLASK_ENV=production
+ExecStart=/opt/myp/venv/bin/python app.py
+Restart=always
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+```
+
+### KIOSK-MODUS-SETUP
+```bash
+#!/bin/bash
+# Raspberry Pi Kiosk-Setup
+# Deutsche Kommentare für Setup-Scripts
+
+# Display-Konfiguration für Touch-Interface
+export DISPLAY=:0
+xset s off
+xset -dpms
+xset s noblank
+
+# Browser-Start mit MYP-Interface
+chromium-browser \
+    --kiosk \
+    --disable-infobars \
+    --disable-session-crashed-bubble \
+    https://localhost/kiosk
+```
+
+## 🧪 TESTING-STANDARDS
+
+### UNIT-TEST-TEMPLATE
+```python
+import pytest
+from backend.app import create_app
+from backend.models import db, User, Printer
+
+class TestDruckerVerwaltung:
+    """Test-Suite für Drucker-Management-Funktionen."""
+    
+    def setup_method(self):
+        """Test-Environment-Setup."""
+        self.app = create_app('testing')
+        self.client = self.app.test_client()
+        
+        with self.app.app_context():
+            db.create_all()
+            self.create_test_data()
+    
+    def test_drucker_erstellen(self):
+        """Test: Neuen Drucker erfolgreich erstellen."""
+        # Given: Test-Daten
+        drucker_daten = {
+            'name': 'Test-Drucker-001',
+            'standort': 'Berlin-Marienfelde',
+            'tapo_ip': '192.168.1.100'
+        }
+        
+        # When: API-Aufruf
+        response = self.client.post('/api/printers', json=drucker_daten)
+        
+        # Then: Erfolgreiche Erstellung
+        assert response.status_code == 201
+        assert 'id' in response.json
+        
+    def teardown_method(self):
+        """Test-Environment-Cleanup."""
+        with self.app.app_context():
+            db.drop_all()
+```
+
+## 🔒 SECURITY-REQUIREMENTS
+
+### AUTHENTICATION-FLOW
+```python
+# Sichere Session-Verwaltung
+@auth_bp.route('/login', methods=['POST'])
+def login():
+    """Benutzer-Authentifizierung mit Rate-Limiting."""
+    
+    # Rate-Limiting für Brute-Force-Schutz
+    if not rate_limiter.check_limit(request.remote_addr):
+        logger.warning(f"Rate-Limit erreicht: {request.remote_addr}")
+        return jsonify({'error': 'Zu viele Anmeldeversuche'}), 429
+    
+    # Credential-Validierung
+    username = request.json.get('username')
+    password = request.json.get('password')
+    
+    user = User.authenticate(username, password)
+    if not user:
+        logger.warning(f"Fehlgeschlagene Anmeldung: {username}")
+        return jsonify({'error': 'Ungültige Anmeldedaten'}), 401
+    
+    # Session-Erstellung mit CSRF-Token
+    session['user_id'] = user.id
+    session['csrf_token'] = generate_csrf_token()
+    
+    logger.info(f"Erfolgreiche Anmeldung: {username}")
+    return jsonify({'success': True, 'user': user.to_dict()})
+```
+
+### INPUT-VALIDATION
+```python
+from marshmallow import Schema, fields, validate
+
+class DruckerCreateSchema(Schema):
+    """Validierungsschema für Drucker-Erstellung."""
+    
+    name = fields.Str(required=True, validate=validate.Length(min=3, max=50))
+    standort = fields.Str(required=True, validate=validate.Length(min=5, max=100))
+    tapo_ip = fields.IP(required=True)
+    beschreibung = fields.Str(validate=validate.Length(max=500))
+
+def validate_drucker_data(data):
+    """Zentrale Validierung für Drucker-Daten."""
+    schema = DruckerCreateSchema()
+    errors = schema.validate(data)
+    
+    if errors:
+        logger.warning(f"Validierungsfehler: {errors}")
+        raise ValidationError(errors)
+    
+    return schema.load(data)
+```
+
+## ⚡ PERFORMANCE-OPTIMIERUNG
+
+### DATABASE-QUERIES
+```python
+# Optimierte Queries für Raspberry Pi
+def get_active_jobs_optimized():
+    """Performance-optimierte Abfrage aktiver Jobs."""
+    return db.session.query(Job)\
+        .options(joinedload(Job.printer))\
+        .options(joinedload(Job.user))\
+        .filter(Job.status.in_(['running', 'scheduled']))\
+        .order_by(Job.start_time.asc())\
+        .limit(50)\
+        .all()
+
+# Caching für häufige Abfragen
+from functools import lru_cache
+
+@lru_cache(maxsize=128)
+def get_drucker_statistics(drucker_id: int):
+    """Gecachte Drucker-Statistiken."""
+    return db.session.query(Job)\
+        .filter(Job.printer_id == drucker_id)\
+        .filter(Job.status == 'completed')\
+        .count()
+```
+
+### FRONTEND-PERFORMANCE
+```javascript
+// Optimiertes JavaScript für Touch-Interface
+class MYPDashboard {
+    constructor() {
+        this.updateInterval = 30000; // 30 Sekunden
+        this.maxRetries = 3;
+        this.retryCount = 0;
+        
+        this.initializeEventListeners();
+        this.startAutoUpdate();
+    }
+    
+    async updateDashboard() {
+        try {
+            const response = await fetch('/api/dashboard-data');
+            const data = await response.json();
+            
+            this.renderDashboardData(data);
+            this.retryCount = 0; // Reset bei Erfolg
+            
+        } catch (error) {
+            console.error('Dashboard-Update fehlgeschlagen:', error);
+            this.handleUpdateError();
+        }
+    }
+    
+    handleUpdateError() {
+        this.retryCount++;
+        if (this.retryCount < this.maxRetries) {
+            // Exponential Backoff
+            setTimeout(() => this.updateDashboard(), 
+                      Math.pow(2, this.retryCount) * 1000);
+        } else {
+            this.showOfflineMode();
+        }
+    }
+}
+```
+
+## 📝 DOKUMENTATIONS-STANDARD
+
+### FUNCTION-DOCSTRINGS
+```python
+def schedule_print_job(drucker_id: int, start_time: datetime, 
+                      duration_minutes: int, user_id: int) -> Dict[str, Any]:
+    """
+    Planen eines Druckauftrags mit automatischer Smart-Plug-Steuerung.
+    
+    Diese Funktion erstellt einen neuen Druckauftrag und konfiguriert
+    die automatische Ein-/Ausschaltung des zugeordneten Druckers über
+    das Tapo-Smart-Plug-System.
+    
+    Args:
+        drucker_id: Eindeutige ID des Zieldruckers
+        start_time: Geplanter Start des Druckauftrags (UTC)
+        duration_minutes: Geschätzte Druckdauer in Minuten
+        user_id: ID des anfragenden Benutzers
+        
+    Returns:
+        dict: Enthält Job-ID, Status und Scheduler-Informationen
+            {
+                'job_id': int,
+                'status': str,
+                'scheduled_power_on': datetime,
+                'scheduled_power_off': datetime,
+                'tapo_status': str
+            }
+            
+    Raises:
+        ValidationError: Bei ungültigen Eingabedaten
+        ConflictError: Bei Zeitkonflikten mit anderen Jobs
+        HardwareError: Bei Tapo-Kommunikationsfehlern
+        
+    Example:
+        >>> result = schedule_print_job(
+        ...     drucker_id=1,
+        ...     start_time=datetime(2025, 1, 15, 14, 0),
+        ...     duration_minutes=120,
+        ...     user_id=42
+        ... )
+        >>> print(result['job_id'])
+        157
+    """
+```
+
+## 🚨 ERROR-HANDLING-STANDARD
+
+### EXCEPTION-HIERARCHY
+```python
+# Projekt-spezifische Exception-Klassen
+class MYPBaseException(Exception):
+    """Basis-Exception für MYP-System."""
+    def __init__(self, message: str, error_code: str = None):
+        self.message = message
+        self.error_code = error_code
+        super().__init__(self.message)
+
+class HardwareError(MYPBaseException):
+    """Fehler bei Hardware-Kommunikation (Tapo, Drucker)."""
+    pass
+
+class SchedulingConflictError(MYPBaseException):
+    """Zeitkonflikt bei Job-Planung."""
+    pass
+
+class ValidationError(MYPBaseException):
+    """Eingabe-Validierungsfehler."""
+    pass
+
+# Global Error Handler
+@app.errorhandler(Exception)
+def handle_global_exception(error):
+    """Globaler Exception-Handler mit Logging."""
+    logger.error(f"Unbehandelte Exception: {str(error)}", exc_info=True)
+    
+    if isinstance(error, MYPBaseException):
+        return jsonify({
+            'error': error.message,
+            'error_code': error.error_code
+        }), 400
+    
+    # Generischer Server-Fehler
+    return jsonify({
+        'error': 'Ein unerwarteter Fehler ist aufgetreten.',
+        'error_code': 'INTERNAL_ERROR'
+    }), 500
+```
+
+## 🔄 SELF-VERIFICATION-CHECKLIST
+
+Nach jeder größeren Änderung ZWINGEND prüfen:
+
+### ✅ FUNKTIONALE KORREKTHEIT
+- [ ] Alle API-Endpunkte reagieren korrekt
+- [ ] Datenbank-Operationen funktionieren
+- [ ] Frontend lädt ohne JavaScript-Fehler
+- [ ] Hardware-Integration (Tapo) erreichbar
+
+### ✅ STRUKTURELLE INTEGRITÄT
+- [ ] Imports funktionieren in allen Modulen
+- [ ] Keine zirkulären Dependencies
+- [ ] Database-Schema konsistent
+- [ ] Session-Management intakt
+
+### ✅ VOLLSTÄNDIGE DOKUMENTATION
+- [ ] Deutsche Docstrings für neue Funktionen
+- [ ] Inline-Kommentare für komplexe Logik
+- [ ] API-Dokumentation aktualisiert
+- [ ] Changelog-Einträge
+
+### ✅ CASCADE-KONSISTENZ
+- [ ] Alle abhängigen Module getestet
+- [ ] Berechtigungen weiterhin gültig
+- [ ] Logging funktioniert in allen Bereichen
+- [ ] Error-Handling vollständig
+
+## 🎯 ZUSÄTZLICHE REGELN
+
+### GIT-WORKFLOW
+- **Commit-Messages**: Englisch, aussagekräftig
+- **Branch-Naming**: `feature/deutsche-beschreibung`, `bugfix/issue-nummer`
+- **Pull-Requests**: Mit deutscher Beschreibung und Impact-Analyse
+
+### CODE-REVIEW-KRITERIEN
+- Deutsche Kommentare und Dokumentation
+- Performance-Impact für Raspberry Pi
+- Security-Implications
+- Hardware-Integration-Auswirkungen
+- Offline-Funktionalität erhalten
+
+### EMERGENCY-PROCEDURES
+```python
+# Notfall-Shutdown-Prozedur
+def emergency_shutdown():
+    """Kontrolliertes System-Shutdown bei kritischen Fehlern."""
+    logger.critical("NOTFALL-SHUTDOWN initiiert")
+    
+    # 1. Alle aktiven Jobs sicher beenden
+    active_jobs = Job.query.filter(Job.status == 'running').all()
+    for job in active_jobs:
+        job.force_complete_with_reason("Notfall-Shutdown")
+    
+    # 2. Smart-Plugs ausschalten
+    tapo_controller.emergency_power_off_all()
+    
+    # 3. Database-Backup erstellen
+    backup_manager.create_emergency_backup()
+    
+    # 4. System-Status auf Wartung setzen
+    system_status.set_maintenance_mode(True)
+    
+    logger.critical("NOTFALL-SHUTDOWN abgeschlossen")
+```
+
+---
+
+## 🏆 QUALITÄTSZIELE
+
+**Code-Qualität**: Produktionsreif, keine Experimente
+**Performance**: Optimiert für Raspberry Pi 4
+**Reliability**: 99.9% Uptime in Air-Gapped-Umgebung  
+**Security**: Keine Schwachstellen, umfassende Validierung
+**Maintainability**: Selbstdokumentierend, modular aufgebaut
+**User Experience**: Intuitive deutsche Benutzerführung
+
+---
+
+**Version**: 1.0.0
+**Gültig für**: MYP Druckerverwaltungssystem v2.0+
+**Letzte Aktualisierung**: $(date +%Y-%m-%d)
+**Entwicklungsstandard**: IHK-Projektarbeit Mercedes-Benz 

backend/app.py

@@ -10,7 +10,9 @@ import sys
 import logging
 import atexit
 import signal
-from datetime import datetime
+import pickle
+import hashlib
+from datetime import datetime, timedelta
 from flask import Flask, render_template, request, jsonify, redirect, url_for, session, abort
 from flask_login import LoginManager, current_user, logout_user, login_required
 from flask_wtf import CSRFProtect
@@ -19,6 +21,97 @@ from sqlalchemy import event
 from contextlib import contextmanager
 import threading
 
+# ===== SESSION-OPTIMIERUNG =====
+class SessionManager:
+    """Optimierter Session-Manager für große Session-Daten"""
+    
+    def __init__(self, app=None):
+        self.app = app
+        self.session_storage_path = None
+        
+    def init_app(self, app):
+        """Initialisiert den Session-Manager für die Flask-App"""
+        self.app = app
+        self.session_storage_path = os.path.join(
+            app.instance_path, 'sessions'
+        )
+        os.makedirs(self.session_storage_path, exist_ok=True)
+        
+    def store_large_session_data(self, key, data):
+        """Speichert große Session-Daten im Dateisystem"""
+        if not self.session_storage_path:
+            return False
+            
+        try:
+            session_id = session.get('session_id')
+            if not session_id:
+                session_id = hashlib.md5(
+                    f"{request.remote_addr}_{datetime.now().isoformat()}".encode()
+                ).hexdigest()
+                session['session_id'] = session_id
+            
+            file_path = os.path.join(
+                self.session_storage_path, 
+                f"{session_id}_{key}.pkl"
+            )
+            
+            with open(file_path, 'wb') as f:
+                pickle.dump(data, f)
+                
+            # Nur Referenz in Session speichern
+            session[f"{key}_ref"] = True
+            
+            return True
+        except Exception as e:
+            logging.error(f"Fehler beim Speichern der Session-Daten: {e}")
+            return False
+    
+    def load_large_session_data(self, key):
+        """Lädt große Session-Daten aus dem Dateisystem"""
+        if not self.session_storage_path:
+            return None
+            
+        try:
+            session_id = session.get('session_id')
+            if not session_id or not session.get(f"{key}_ref"):
+                return None
+                
+            file_path = os.path.join(
+                self.session_storage_path,
+                f"{session_id}_{key}.pkl"
+            )
+            
+            if not os.path.exists(file_path):
+                return None
+                
+            with open(file_path, 'rb') as f:
+                return pickle.load(f)
+                
+        except Exception as e:
+            logging.error(f"Fehler beim Laden der Session-Daten: {e}")
+            return None
+    
+    def cleanup_expired_sessions(self):
+        """Bereinigt abgelaufene Session-Dateien"""
+        if not self.session_storage_path:
+            return
+            
+        try:
+            current_time = datetime.now()
+            for filename in os.listdir(self.session_storage_path):
+                file_path = os.path.join(self.session_storage_path, filename)
+                file_time = datetime.fromtimestamp(os.path.getmtime(file_path))
+                
+                # Lösche Dateien älter als 24 Stunden
+                if current_time - file_time > timedelta(hours=24):
+                    os.remove(file_path)
+                    
+        except Exception as e:
+            logging.error(f"Fehler bei Session-Cleanup: {e}")
+
+# Globaler Session-Manager
+session_manager = SessionManager()
+
 # ===== PRODUCTION-KONFIGURATION =====
 class ProductionConfig:
     """Production-Konfiguration für Mercedes-Benz TBA Marienfelde Air-Gapped Environment
@@ -523,6 +616,9 @@ login_manager.init_app(app)
 login_manager.login_view = "auth.login"
 login_manager.login_message = "Bitte melden Sie sich an, um auf diese Seite zuzugreifen."
 
+# Session-Manager initialisieren
+session_manager.init_app(app)
+
 @login_manager.user_loader
 def load_user(user_id):
     """Lädt einen Benutzer für Flask-Login"""
@@ -595,22 +691,32 @@ def log_response_info(response):
 
 @app.before_request
 def check_session_activity():
-    """Prüft Session-Aktivität und meldet inaktive Benutzer ab"""
+    """Prüft Session-Aktivität und meldet inaktive Benutzer ab mit optimiertem Cookie-Management"""
     if current_user.is_authenticated:
         from utils.utilities_collection import SESSION_LIFETIME
-        last_activity = session.get('last_activity')
-        if last_activity:
+        now = datetime.now()
+        
+        # Reduzierte Session-Daten für Cookie-Größe
+        last_activity_str = session.get('last_activity')
+        if last_activity_str:
             try:
-                last_activity_time = datetime.fromisoformat(last_activity)
-                if (datetime.now() - last_activity_time).total_seconds() > SESSION_LIFETIME.total_seconds():
+                # Verarbeite sowohl alte ISO-Format als auch neue Zeit-Format
+                if 'T' in last_activity_str:  # ISO-Format
+                    last_activity_time = datetime.fromisoformat(last_activity_str)
+                else:  # Nur Zeit-Format
+                    today = now.date()
+                    time_part = datetime.strptime(last_activity_str, '%H:%M').time()
+                    last_activity_time = datetime.combine(today, time_part)
+                    
+                if (now - last_activity_time).total_seconds() > SESSION_LIFETIME.total_seconds():
                     app_logger.info(f"Session abgelaufen für Benutzer {current_user.id}")
                     logout_user()
                     return redirect(url_for('auth.login'))
-            except:
-                pass
+            except Exception as e:
+                app_logger.warning(f"Fehler beim Parsen der Session-Zeit: {e}")
         
-        # Aktivität aktualisieren
-        session['last_activity'] = datetime.now().isoformat()
+        # Optimierte Session-Aktivität aktualisieren - nur Zeit statt volles ISO-Format
+        session['last_activity'] = now.strftime('%H:%M')
         session.permanent = True
 
 # ===== HAUPTROUTEN =====

backend/blueprints/api.py

@@ -0,0 +1,139 @@
+"""
+API-Blueprint für das 3D-Druck-Management-System
+
+Dieses Modul enthält allgemeine API-Endpunkte und WebSocket-Fallback-Funktionalität.
+"""
+
+import logging
+from datetime import datetime
+from flask import Blueprint, jsonify, request, session
+from flask_login import login_required, current_user
+from models import get_db_session, User, Notification
+from utils.logging_config import get_logger
+
+# Blueprint erstellen
+api_blueprint = Blueprint('api', __name__, url_prefix='/api')
+
+# Logger initialisieren
+api_logger = get_logger("api")
+
+@api_blueprint.route('/ws-fallback', methods=['GET'])
+@login_required
+def ws_fallback():
+    """WebSocket-Fallback für Browser ohne WebSocket-Unterstützung"""
+    try:
+        # Einfache Polling-Antwort für Clients ohne WebSocket
+        return jsonify({
+            'success': True,
+            'timestamp': datetime.now().isoformat(),
+            'user_id': current_user.id,
+            'message': 'WebSocket-Fallback aktiv'
+        })
+    except Exception as e:
+        api_logger.error(f"Fehler im WebSocket-Fallback: {str(e)}")
+        return jsonify({'error': 'WebSocket-Fallback-Fehler'}), 500
+
+@api_blueprint.route('/notifications', methods=['GET'])
+@login_required
+def get_notifications():
+    """Abrufen der Benutzer-Benachrichtigungen"""
+    try:
+        db_session = get_db_session()
+        
+        # Benutzer-spezifische Benachrichtigungen
+        notifications = db_session.query(Notification).filter(
+            Notification.user_id == current_user.id,
+            Notification.is_read == False
+        ).order_by(Notification.created_at.desc()).limit(20).all()
+        
+        notification_list = []
+        for notification in notifications:
+            notification_list.append({
+                'id': notification.id,
+                'title': notification.title,
+                'message': notification.message,
+                'type': notification.type,
+                'created_at': notification.created_at.isoformat(),
+                'is_read': notification.is_read
+            })
+        
+        db_session.close()
+        
+        return jsonify({
+            'success': True,
+            'notifications': notification_list,
+            'count': len(notification_list)
+        })
+        
+    except Exception as e:
+        api_logger.error(f"Fehler beim Abrufen der Benachrichtigungen: {str(e)}")
+        return jsonify({'error': 'Fehler beim Laden der Benachrichtigungen'}), 500
+
+@api_blueprint.route('/notifications/<int:notification_id>/read', methods=['POST'])
+@login_required
+def mark_notification_read(notification_id):
+    """Markiert eine Benachrichtigung als gelesen"""
+    try:
+        db_session = get_db_session()
+        
+        notification = db_session.query(Notification).filter(
+            Notification.id == notification_id,
+            Notification.user_id == current_user.id
+        ).first()
+        
+        if not notification:
+            db_session.close()
+            return jsonify({'error': 'Benachrichtigung nicht gefunden'}), 404
+        
+        notification.is_read = True
+        notification.read_at = datetime.now()
+        db_session.commit()
+        db_session.close()
+        
+        api_logger.info(f"Benachrichtigung {notification_id} als gelesen markiert")
+        
+        return jsonify({
+            'success': True,
+            'message': 'Benachrichtigung als gelesen markiert'
+        })
+        
+    except Exception as e:
+        api_logger.error(f"Fehler beim Markieren der Benachrichtigung: {str(e)}")
+        return jsonify({'error': 'Fehler beim Markieren der Benachrichtigung'}), 500
+
+@api_blueprint.route('/system/status', methods=['GET'])
+@login_required
+def system_status():
+    """Gibt den System-Status zurück"""
+    try:
+        return jsonify({
+            'success': True,
+            'status': 'online',
+            'timestamp': datetime.now().isoformat(),
+            'user': {
+                'id': current_user.id,
+                'username': current_user.username,
+                'is_admin': current_user.is_admin
+            }
+        })
+    except Exception as e:
+        api_logger.error(f"Fehler beim Abrufen des System-Status: {str(e)}")
+        return jsonify({'error': 'System-Status nicht verfügbar'}), 500
+
+@api_blueprint.route('/heartbeat', methods=['POST'])
+@login_required  
+def heartbeat():
+    """Heartbeat-Endpunkt für Frontend-Verbindungsmonitoring"""
+    try:
+        # Session-Aktivität aktualisieren
+        session['last_heartbeat'] = datetime.now().strftime('%H:%M:%S')
+        session.permanent = True
+        
+        return jsonify({
+            'success': True,
+            'timestamp': datetime.now().isoformat(),
+            'user_id': current_user.id
+        })
+    except Exception as e:
+        api_logger.error(f"Fehler im Heartbeat: {str(e)}")
+        return jsonify({'error': 'Heartbeat-Fehler'}), 500 

backend/blueprints/auth.py

@@ -92,8 +92,12 @@ def login():
                 
                 if user and user.check_password(password):
                     # Update last login timestamp
-                    user.update_last_login()
-                    db_session.commit()
+                    try:
+                        user.last_login = datetime.now()
+                        db_session.commit()
+                    except Exception as update_error:
+                        auth_logger.warning(f"Fehler beim Update der Login-Zeit: {str(update_error)}")
+                        # Fortsetzung ohne fatalen Fehler
                     
                     login_user(user, remember=remember_me)
                     auth_logger.info(f"Benutzer {username} hat sich erfolgreich angemeldet")
@@ -170,8 +174,12 @@ def api_login():
         
         if user and user.check_password(password):
             # Update last login timestamp
-            user.update_last_login()
-            db_session.commit()
+            try:
+                user.last_login = datetime.now()
+                db_session.commit()
+            except Exception as update_error:
+                auth_logger.warning(f"Fehler beim Update der Login-Zeit: {str(update_error)}")
+                # Fortsetzung ohne fatalen Fehler
             
             login_user(user, remember=remember_me)
             auth_logger.info(f"API-Login erfolgreich für Benutzer {username}")

backend/logs/app/app.log

@@ -0,0 +1,691 @@
+2025-06-12 07:24:57 - [app] app - [WARNING] WARNING - DatabaseCleanupManager nicht verfügbar - Fallback auf Legacy-Cleanup
+2025-06-12 07:24:57 - [app] app - [INFO] INFO - Optimierte SQLite-Engine erstellt: backend/database/myp.db
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [CONFIG] Erkannte Umgebung: development
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [CONFIG] Production-Modus: False
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [CONFIG] Verwende Development-Konfiguration
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [DEVELOPMENT] Aktiviere Development-Konfiguration
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ MYP Development Environment Konfiguration aktiviert
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ Environment: Development/Testing
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ Debug Mode: True
+2025-06-12 07:24:59 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ SQL Echo: True
+2025-06-12 07:25:02 - [app] app - [INFO] INFO - SQLite für Raspberry Pi optimiert (reduzierte Cache-Größe, SD-Karten I/O)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [INFO] INFO - Locating template 'login.html':
+    1: trying loader of application 'app'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\login.html')
+2025-06-12 07:25:02 - [app] app - [INFO] INFO - Locating template 'base.html':
+    1: trying loader of application 'app'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\base.html')
+2025-06-12 07:25:02 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.DatabaseError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/4xp6)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: <sqlite3.Connection object at 0x00000177EFA626B0> returned NULL without setting an exception
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:02 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/static/icons/icon-192.png
+2025-06-12 07:25:02 - [app] app - [INFO] INFO - Locating template 'errors/404.html':
+    1: trying loader of application 'app'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\errors\\404.html')
+2025-06-12 07:25:06 - [app] app - [DEBUG] DEBUG - Request: POST /auth/login
+2025-06-12 07:25:06 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:06 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 07:25:12 - [app] app - [DEBUG] DEBUG - Request: POST /auth/login
+2025-06-12 07:25:12 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:12 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 07:25:14 - [app] app - [DEBUG] DEBUG - Request: GET /auth/login
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.DatabaseError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/4xp6)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: <sqlite3.Connection object at 0x00000177EFA626B0> returned NULL without setting an exception
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: <sqlite3.Connection object at 0x00000177EFA626B0> returned NULL without setting an exception
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.DatabaseError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/4xp6)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.DatabaseError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/4xp6)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: <sqlite3.Connection object at 0x00000177EFA626B0> returned NULL without setting an exception
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:14 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/static/icons/icon-192.png
+2025-06-12 07:25:16 - [app] app - [DEBUG] DEBUG - Request: POST /auth/login
+2025-06-12 07:25:16 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:16 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 07:25:24 - [app] app - [DEBUG] DEBUG - Request: GET /request
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [INFO] INFO - Locating template 'guest_request.html':
+    1: trying loader of application 'app'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\guest_request.html')
+2025-06-12 07:25:24 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: <sqlite3.Connection object at 0x00000177EFA626B0> returned NULL without setting an exception
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:24 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/static/icons/icon-192.png
+2025-06-12 07:25:28 - [app] app - [DEBUG] DEBUG - Request: POST /request
+2025-06-12 07:25:28 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:28 - [app] app - [INFO] INFO - OTP generiert für Guest Request 3
+2025-06-12 07:25:28 - [app] app - [ERROR] ERROR - Datenbank-Transaktion fehlgeschlagen: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users JOIN user_permissions ON users.id = user_permissions.user_id 
+WHERE user_permissions.can_approve_jobs = 1]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:28 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 07:25:33 - [app] app - [DEBUG] DEBUG - Request: GET /requests/overview
+2025-06-12 07:25:33 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [INFO] INFO - Locating template 'guest_requests_overview.html':
+    1: trying loader of application 'app'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\guest_requests_overview.html')
+2025-06-12 07:25:34 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: <sqlite3.Connection object at 0x00000177EFA626B0> returned NULL without setting an exception
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:34 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/static/icons/icon-192.png
+2025-06-12 07:25:36 - [app] app - [DEBUG] DEBUG - Request: GET /api/ws-fallback
+2025-06-12 07:25:36 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:36 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/ws-fallback
+2025-06-12 07:25:36 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 07:25:36 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 07:25:36 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:36 - [app] app - [DEBUG] DEBUG - Response: 302
+2025-06-12 07:25:36 - [app] app - [DEBUG] DEBUG - Request: GET /auth/login
+2025-06-12 07:25:36 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:36 - [app] app - [DEBUG] DEBUG - Response: 200

backend/logs/auth/auth.log

@@ -0,0 +1,24 @@
+2025-06-12 07:25:06 - [auth] auth - [WARNING] WARNING - JSON-Parsing fehlgeschlagen: 400 Bad Request: Failed to decode JSON object: Expecting value: line 1 column 1 (char 0)
+2025-06-12 07:25:06 - [auth] auth - [ERROR] ERROR - Fehler bei der Anmeldung: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.username = ? OR users.email = ?
+ LIMIT ? OFFSET ?]
+[parameters: ('admin@mercedes-benz.com', 'admin@mercedes-benz.com', 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:12 - [auth] auth - [WARNING] WARNING - JSON-Parsing fehlgeschlagen: 400 Bad Request: Failed to decode JSON object: Expecting value: line 1 column 1 (char 0)
+2025-06-12 07:25:12 - [auth] auth - [ERROR] ERROR - Fehler bei der Anmeldung: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.username = ? OR users.email = ?
+ LIMIT ? OFFSET ?]
+[parameters: ('admin@mercedes-benz.com', 'admin@mercedes-benz.com', 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 07:25:16 - [auth] auth - [WARNING] WARNING - JSON-Parsing fehlgeschlagen: 400 Bad Request: Failed to decode JSON object: Expecting value: line 1 column 1 (char 0)
+2025-06-12 07:25:16 - [auth] auth - [ERROR] ERROR - Fehler bei der Anmeldung: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.username = ? OR users.email = ?
+ LIMIT ? OFFSET ?]
+[parameters: ('admin@mercedes-benz.com', 'admin@mercedes-benz.com', 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)

backend/logs/core_system/core_system.log

@@ -0,0 +1,2 @@
+2025-06-12 07:24:57 - [core_system] core_system - [INFO] INFO - ✅ Core System Management Module erfolgreich initialisiert
+2025-06-12 07:24:57 - [core_system] core_system - [INFO] INFO - 📊 Massive Konsolidierung: 6 Dateien → 1 Datei (88% Reduktion)

backend/logs/data_management/data_management.log

@@ -0,0 +1,2 @@
+2025-06-12 07:24:58 - [data_management] data_management - [INFO] INFO - ✅ Data Management Module initialisiert
+2025-06-12 07:24:58 - [data_management] data_management - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)

backend/logs/guest/guest.log

@@ -0,0 +1,5 @@
+2025-06-12 07:25:28 - [guest] guest - [ERROR] ERROR - Fehler beim Erstellen der Gastanfrage: (sqlite3.OperationalError) no such column: users.theme_preference
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users JOIN user_permissions ON users.id = user_permissions.user_id 
+WHERE user_permissions.can_approve_jobs = 1]
+(Background on this error at: https://sqlalche.me/e/20/e3q8)

backend/logs/hardware_integration/hardware_integration.log

@@ -0,0 +1,4 @@
+2025-06-12 07:24:58 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ PyP100 (TP-Link Tapo) verfügbar
+2025-06-12 07:24:58 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Printer Monitor initialisiert
+2025-06-12 07:24:58 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Hardware Integration Module initialisiert
+2025-06-12 07:24:58 - [hardware_integration] hardware_integration - [INFO] INFO - 📊 Massive Konsolidierung: 2 Dateien → 1 Datei (50% Reduktion)

backend/logs/job_queue_system/job_queue_system.log

@@ -0,0 +1,3 @@
+2025-06-12 07:24:58 - [job_queue_system] job_queue_system - [INFO] INFO - ✅ Job & Queue System Module initialisiert
+2025-06-12 07:24:58 - [job_queue_system] job_queue_system - [INFO] INFO - 📊 MASSIVE Konsolidierung: 4 Dateien → 1 Datei (75% Reduktion)
+2025-06-12 07:25:38 - [job_queue_system] job_queue_system - [INFO] INFO - Queue Manager gestoppt (Legacy-Kompatibilität)

backend/logs/monitoring_analytics/monitoring_analytics.log

@@ -0,0 +1,2 @@
+2025-06-12 07:24:59 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - ✅ Monitoring & Analytics Module initialisiert
+2025-06-12 07:24:59 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - 📊 MASSIVE Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)

backend/logs/scheduler/scheduler.log

@@ -0,0 +1 @@
+2025-06-12 07:24:58 - [scheduler] scheduler - [INFO] INFO - Task check_jobs registriert: Intervall 30s, Enabled: True

backend/logs/security_suite/security_suite.log

@@ -0,0 +1,3 @@
+2025-06-12 07:24:58 - [security_suite] security_suite - [INFO] INFO - ✅ Security Suite Module initialisiert
+2025-06-12 07:24:58 - [security_suite] security_suite - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 07:24:59 - [security_suite] security_suite - [INFO] INFO - 🔒 Security Suite initialisiert

backend/logs/startup/startup.log

@@ -0,0 +1,9 @@
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - ==================================================
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - [START] MYP Platform Backend wird gestartet...
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - 🐍 Python Version: 3.13.3 (tags/v3.13.3:6280bb5, Apr  8 2025, 14:47:33) [MSC v.1943 64 bit (AMD64)]
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - 💻 Betriebssystem: nt (win32)
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - 📁 Arbeitsverzeichnis: C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - ⏰ Startzeit: 2025-06-12T07:24:59.622331
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - 🪟 Windows-Modus: Aktiviert
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - 🔒 Windows-sichere Log-Rotation: Aktiviert
+2025-06-12 07:24:59 - [startup] startup - [INFO] INFO - ==================================================

backend/logs/tapo_controller/tapo_controller.log

@@ -0,0 +1 @@
+2025-06-12 07:24:58 - [tapo_controller] tapo_controller - [INFO] INFO - ✅ tapo controller initialisiert

backend/logs/utilities_collection/utilities_collection.log

@@ -0,0 +1,2 @@
+2025-06-12 07:24:57 - [utilities_collection] utilities_collection - [INFO] INFO - ✅ Utilities Collection initialisiert
+2025-06-12 07:24:57 - [utilities_collection] utilities_collection - [INFO] INFO - 🚨 ALLERLETZTE MEGA-Konsolidierung: 12+ Dateien → 1 Datei (90%+ Reduktion)

backend/logs/windows_fixes/windows_fixes.log

@@ -0,0 +1,2 @@
+2025-06-12 07:24:57 - [windows_fixes] windows_fixes - [INFO] INFO - 🔧 Wende Windows-spezifische Fixes an...
+2025-06-12 07:24:57 - [windows_fixes] windows_fixes - [INFO] INFO - ✅ Alle Windows-Fixes erfolgreich angewendet

docs/ERROR_RECOVERY_LOG.md

@@ -0,0 +1 @@
+