task_done（）调用了太多次

Question

你好堆栈溢出的人！

我目前在Flask / Socketio应用程序中每隔一段时间就会出现此错误，而且我还不知道从哪里开始调试或者它意味着什么：

Traceback (most recent call last):
  File "/lib/python2.7/site-packages/gevent/greenlet.py", line 536, in run
  File "/lib/python2.7/site-packages/engineio/socket.py", line 167, in writer
  File "/lib/python2.7/site-packages/engineio/socket.py", line 37, in poll
  File "/lib/python2.7/site-packages/gevent/queue.py", line 470, in task_done
ValueError: task_done() called too many times

当它发生时似乎没有任何押韵或理由。