<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def refresh_token():
 # noqa: E501 """Refreshes login token using refresh token Refreshes login token using refresh token # noqa: E501 :rtype: UserAuth """

    current_user = get_jwt_identity()
    if not current_user:
        return ErrorResponse(status=401, message="Not logged in")
    access_token = create_access_token(identity=current_user)
    return AuthResponse(status=201, message='Refreshed Access Token', access_token=access_token, auth=UserAuth())