使用被动回复，抛出‘TypeError'异常

[ShenKeeeew]

使用被动回复接口时，抛出异常，比较奇怪的是有时出错，有时正常，是不是网络问题的锅？
代码如下：
@itchatmp.msg_register(itchatmp.content.LINK)
def linx_reply(msg):
if u'红包' in msg['Title']:
red_dict[msg['FromUserName']] = msg['Url']
#下面方法为向某网站api接口请求数据
conunt_left = connect_mtdhb.update_counts()
return u'系统可用红包点数为 ' + str(conunt_left) + ',请输入红包密令'
异常日志如下：
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/tornado/web.py", line 1592, in _execute result = yield result
File "/usr/local/lib/python3.6/site-packages/tornado/gen.py", line 1133, in run value = future.result()
File "/usr/local/lib/python3.6/site-packages/tornado/gen.py", line 1141, in run yielded = self.gen.throw(*exc_info)
File "/usr/local/lib/python3.6/site-packages/itchatmp/components/register.py", line 236, in post (rawReply, rawReply.get('ToUserName', '')))
File "/usr/local/lib/python3.6/site-packages/tornado/gen.py", line 1133, in run value = future.result()
File "/usr/local/lib/python3.6/concurrent/futures/_base.py", line 425, in result return self.__get_result()
File "/usr/local/lib/python3.6/concurrent/futures/_base.py", line 384, in __get_result raise self._exception
File "/usr/local/lib/python3.6/concurrent/futures/thread.py", line 56, in run result = self.fn(*self.args, **self.kwargs)
TypeError: send() missing 1 required positional argument: 'toUserName'

[archerhu77]

去年10月都没人回复啊？我也是遇到类似错误，不知道如何解决，调试两天了