def add_privat_routes(app: FastAPI, fastapi_users: FastAPIUsers, routes: list | None = None) -> FastAPI:
    """Adding all routes for specific user routes. The user has to authenticate before using this routes."""
    current_active_verified_user = fastapi_users.current_user(active=True, verified=True)
    current_active_user = fastapi_users.current_user(active=True)

    PYDANTIC_VERSION = metadata.version("pydantic")
    _PYDANTIC_MAJOR_VERSION: int = int(PYDANTIC_VERSION.split(".")[0])
    print(_PYDANTIC_MAJOR_VERSION, PYDANTIC_VERSION)

    async def per_request_config_modifier(config: dict, request: Request) -> dict:
        """Modify the config for each request."""
        user: User = current_active_verified_user()
        config["configurable"] = {}
        # Attention: Make sure that the user ID is over-ridden for each request. We should not be accepting a user ID from the user in this case!
        config["configurable"]["user_id"] = user.user
        config["configurable"]["openai_api_key"] = user.openai_key
        return config

    if routes is None or "vector_db" in routes:
        user_vectorstore: APIHandler = APIHandler(get_user_db(),
                                                  path="/user/vdb",
                                                  per_req_config_modifier=per_request_config_modifier
                                                  )

        @app.post("/user/vector_db/invoke")
        async def invoke_with_auth(
                invoke_request: user_vectorstore.InvokeRequest,
                request: Request,
                current_user: User = Depends(current_active_verified_user)) -> Response:
            """Handle a request.Included invoke_request: api_handler.InvokeRequest for documentation purposes
             The API Handler validates the parts of the request that are used by the runnable (e.g., input, config fields)"""
            config = {"configurable": {"user_id": current_user.username}}

            return await user_vectorstore.invoke(request, server_config=config)