请求信息正确的情况下调用 QueryDeviceCount 方法会出现 JSON 解析错误

[ToonoW]

string(63) "查询失败:Table 'tpns_data.t_2100311092_token' doesn't exist"
{"ret_code":0,"err_msg":"","result":{"device_num":0}}
Traceback (most recent call last):
  File "/home/wujinwen/Codes/Python/web/D3/notification_common_service/notification_service/xinge/push_core.py", line 228, in <module>
    result = app.QueryDeviceCount()
  File "/home/wujinwen/.virtualenvs/notification_common_service/local/lib/python2.7/site-packages/xinge_push/xinge.py", line 331, in QueryDeviceCount
    ret = self.Request(self.PATH_GET_DEV_NUM, params)
  File "/home/wujinwen/.virtualenvs/notification_common_service/local/lib/python2.7/site-packages/xinge_push/xinge.py", line 106, in Request
    return XingeHelper.Request(path, params)
  File "/home/wujinwen/.virtualenvs/notification_common_service/local/lib/python2.7/site-packages/xinge_push/xinge.py", line 542, in Request
    retDict = json.loads(data)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded