fixed client login and changed qt6 lib

server/app/utils/security.py

@@ -38,7 +38,7 @@ def create_access_token(
         expire = datetime.utcnow() + timedelta(minutes=settings.access_token_expire_minutes)
 
     to_encode = {
-        "sub": user_id,
+        "sub": str(user_id),  # JWT spec requires sub to be a string
         "username": username,
         "role": role,
         "tenant_id": tenant_id,
@@ -59,7 +59,7 @@ def create_refresh_token(
         expire = datetime.utcnow() + timedelta(days=settings.refresh_token_expire_days)
 
     to_encode = {
-        "sub": user_id,
+        "sub": str(user_id),  # JWT spec requires sub to be a string
         "exp": expire,
         "type": "refresh"
     }
@@ -71,5 +71,8 @@ def decode_token(token: str) -> dict | None:
     try:
         payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
         return payload
-    except JWTError:
+    except JWTError as e:
+        print(f"JWT decode error: {e}")
+        print(f"Token (first 50 chars): {token[:50]}...")
+        print(f"Secret key (first 10 chars): {settings.secret_key[:10]}...")
         return None