Raspberry pi 随机获取错误服务不适用于带有Raspberry PI b模型的Google助手PushToTalk。如何修复错误或如何处理此错误

我已经用最新的操作系统在RaspBerry PI B模型中实现了Google助手。我跟着

音频样本测试工作正常

很多时候，它是有效的

.asoundrc file
   pcm.!default{ 
   type asym
   playback.pcm{type plug slave.pcm "hw:0"}
   capture.pcm{type plug slave.pcm "hw:1"}
}

ctl.!default{
   type hw
   card 0
}

错误：-

INFO:root:Recording audio request.
      File "/usr/lib/python3.5/runpy.py", line 193, in _run_module_as_main"__main__", mod_spec)
      File "/usr/lib/python3.5/runpy.py", line 85, in _run_codeexec(code, run_globals)
      File "/home/pi/teamaker/grpc/pushtotalk_back.py", line 337, in <module>main()
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/click/core.py", line 722, in __call__return self.main(*args, **kwargs)
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/click/core.py", line 697, in main\ rv = self.invoke(ctx)
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/click/core.py", line 895, in invoke
        return ctx.invoke(self.callback, **ctx.params)
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/click/core.py", line 535, in invoke
        return callback(*args, **kwargs)
      File "/home/pi/teamaker/grpc/pushtotalk_back.py", line 326, in main
        continue_conversation = assistant.converse()
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/tenacity/__init__.py", line 87, in wrapped_f
        return r.call(f, *args, **kw)
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/tenacity/__init__.py", line 235, in call
        do = self.iter(result=result, exc_info=exc_info)
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/tenacity/__init__.py", line 194, in iter
        return fut.result()
      File "/usr/lib/python3.5/concurrent/futures/_base.py", line 398, in result
        return self.__get_result()
      File "/usr/lib/python3.5/concurrent/futures/_base.py", line 357, in __get_result
        raise self._exception
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/tenacity/__init__.py", line 238, in call
        result = fn(*args, **kwargs)
      File "/home/pi/teamaker/grpc/pushtotalk_back.py", line 145, in converse
        self.conversation_stream.stop_playback()
      File "/home/pi/teamaker/grpc/audio_helpers.py", line 288, in stop_playback
        self._source.stop()
      File "/home/pi/teamaker/grpc/audio_helpers.py", line 222, in stop
        self._audio_stream.stop()
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/sounddevice.py", line 1235, in stop
        _check(err, 'Error stopping stream')
      File "/home/pi/teamaker/grpc/env_local/lib/python3.5/site-packages/sounddevice.py", line 2671, in _check
        raise PortAudioError(msg)
sounddevice.PortAudioError: Error stopping stream: Unanticipated host API 0 error -77: 'File descriptor in bad state'

INFO:root:录制音频请求。
文件“/usr/lib/python3.5/runpy.py”，第193行，在mod\u规范的“主”模块中
文件“/usr/lib/python3.5/runpy.py”，第85行，运行代码执行（代码，运行全局）
文件“/home/pi/teamaker/grpc/pushtotalk_back.py”，第337行，在main（）中
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/click/core.py”，第722行，在调用返回self.main中（*args，**kwargs）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/click/core.py”，第697行，在main\rv=self.invoke（ctx）中
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/click/core.py”，第895行，在invoke中
返回ctx.invoke（self.callback，**ctx.params）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/click/core.py”，第535行，在invoke中
返回回调（*args，**kwargs）
文件“/home/pi/teamaker/grpc/pushtotalk_back.py”，第326行，主文件
continue\u conversation=assistant.converse（）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/tenstity/__init___.py”，第87行，包装为
返回r.call（f，*args，**kw）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/tenstity/_init__.py”，第235行，在调用中
do=self.iter（结果=result，exc_info=exc_info）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/tenstity/__init___;.py”，iter第194行
返回未来结果（）
文件“/usr/lib/python3.5/concurrent/futures/_base.py”，第398行，在结果中
返回self.\u获取\u结果（）
文件“/usr/lib/python3.5/concurrent/futures/_base.py”，第357行，在“获取结果”中
提出自己的意见
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/tenstity/__init__;u.py”，调用中第238行
结果=fn（*args，**kwargs）
文件“/home/pi/teamaker/grpc/pushtotalk_back.py”，第145行，相反
self.conversation\u stream.stop\u playback（）
文件“/home/pi/teamaker/grpc/audio\u helpers.py”，第288行，停止播放
self.\u source.stop（）
文件“/home/pi/teamaker/grpc/audio_helpers.py”，第222行，在stop中
self.\u audio\u stream.stop（）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/sounddevice.py”，第1235行，在stop中
_检查（错误，‘错误停止流’）
文件“/home/pi/teamaker/grpc/env_local/lib/python3.5/site packages/sounddevice.py”，第2671行，检查中
提升端口错误（msg）
sounddevice.PortAudioError:停止流时出错：意外的主机API 0错误-77:“文件描述符处于错误状态”