🎉 Added COMMON_ERRORS.md, updated requirements.txt, setup.sh, and introduced file_utils.py & ssl_config.py in backend/utils 🎨

backend/utils/ssl_config.py

@@ -117,9 +117,11 @@ OU = MYP Druckerverwaltung
 CN = localhost
 
 [v3_req]
-keyUsage = keyEncipherment, dataEncipherment
-extendedKeyUsage = serverAuth
-subjectAltName = @alt_names
+basicConstraints = CA:FALSE
+keyUsage = critical, digitalSignature, keyEncipherment, keyAgreement
+extendedKeyUsage = critical, serverAuth, clientAuth
+subjectAltName = critical, @alt_names
+nsCertType = server
 
 [alt_names]
 DNS.1 = localhost