之前做的APP 微信授权登录没有存unionid，现在弄了个微信小程序如何打通用户？

错误 The given payload is invalid.         try {             $app = Factory::miniProgram(config('app.official_account_wechat'));             $user_session = $app->auth->session($code);             //消息解密             $decryptedData = $app->encryptor->decryptData($user_session['session_key'], $iv, $encryptedData)         }