ValueError: Unknown field message.

[krasilnikoff]

на некоторых файлах, со сравнительное не большой продолждительностью (до 2 минут) получаю ошибку:
INFO:asrclient:got response: endOfUtt=False; len(recognition)=0; messages_count=1
Traceback (most recent call last):
File "/usr/local/bin/asrclient-cli.py", line 134, in
main()
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 722, in call
return self.main(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/usr/local/bin/asrclient-cli.py", line 131, in main
**kwars)
File "/usr/local/lib/python2.7/dist-packages/asrclient/client.py", line 438, in recognize
state.future.result()
File "/usr/local/lib/python2.7/dist-packages/concurrent/futures/_base.py", line 429, in result
return self.__get_result()
File "/usr/local/lib/python2.7/dist-packages/concurrent/futures/thread.py", line 62, in run
result = self.fn(*self.args, **self.kwargs)
File "/usr/local/lib/python2.7/dist-packages/asrclient/client.py", line 290, in check_result
raise e
ValueError: Unknown field message.