Cometchat，尝试登录时遇到排污库错误com.android.volley.ServerError 206

Question

因为我可以创建新的用户从相同的网址，但无法登录在cometchat

   cometchat.login(url, "username","password", new Callbacks() 


        @Override
        public void successCallback(JSONObject success) {
            Log.d("Success-->", success + "");
        }


       @Override
       public void failCallback(JSONObject fail) {
       Log.d("Fail Login-->", fail + "");
       //createUser();
      }
      });

返回：{ "code": "206", "message": "com.android.volley.ServerError" }