rasa shell时候报错

[MrRace]

在训练完模型后，尝试使用rasa shell 进行命令行方式交互对话时，报错：

2020-01-04 10:37:48 INFO     root  - Connecting to channel 'cmdline' which was specified by the '--connector' argument. Any other channels will be ignored. To connect to all given channels, omit the '--connector' argument.
2020-01-04 10:37:48 INFO     root  - Starting Rasa server on http://localhost:5005
2020-01-04 10:37:51 INFO     absl  - Entry Point [tensor2tensor.envs.tic_tac_toe_env:TicTacToeEnv] registered with id [T2TEnv-TicTacToeEnv-v0]
Bot loaded. Type a message and press enter (use '/stop' to exit): 
Your input ->  广州今天天气                                                                                                                                                                                       
/tmp/tmpno3k5753/nlu/addons_ner_bilstm_crf_tf
2020-01-04 10:38:19 ERROR    asyncio  - Task exception was never retrieved
future: <Task finished coro=<configure_app.<locals>.run_cmdline_io() done, defined at /home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/run.py:124> exception=TimeoutError()>
Traceback (most recent call last):
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/run.py", line 128, in run_cmdline_io
    server_url=constants.DEFAULT_SERVER_FORMAT.format("http", port)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/channels/console.py", line 135, in record_messages
    async for response in bot_responses:
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/channels/console.py", line 101, in send_message_receive_stream
    async for line in resp.content:
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/aiohttp/streams.py", line 39, in __anext__
    rv = await self.read_func()
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/aiohttp/streams.py", line 328, in readline
    await self._wait('readline')
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/aiohttp/streams.py", line 296, in _wait
    await waiter
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/aiohttp/helpers.py", line 596, in __exit__
    raise asyncio.TimeoutError from None
concurrent.futures._base.TimeoutError
Transport closed @ ('127.0.0.1', 32964) and exception experienced during error handling
2020-01-04 10:38:19 ERROR    asyncio  - Task exception was never retrieved
future: <Task finished coro=<RestInput.on_message_wrapper() done, defined at /home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/channels/channel.py:392> exception=OSError('SavedModel file does not exist at: /tmp/tmpno3k5753/nlu/addons_ner_bilstm_crf_tf/{saved_model.pbtxt|saved_model.pb}',)>
Traceback (most recent call last):
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/channels/channel.py", line 406, in on_message_wrapper
    await on_new_message(message)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/channels/channel.py", line 82, in handler
    await app.agent.handle_message(*args, **kwargs)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/agent.py", line 486, in handle_message
    return await processor.handle_message(message)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/processor.py", line 83, in handle_message
    tracker = await self.log_message(message, should_save_tracker=False)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/processor.py", line 154, in log_message
    await self._handle_message_with_tracker(message, tracker)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/processor.py", line 358, in _handle_message_with_tracker
    parse_data = await self._parse_message(message, tracker)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/processor.py", line 337, in _parse_message
    message.text, message.message_id, tracker
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/core/interpreter.py", line 283, in parse
    result = self.interpreter.parse(text, message_id)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa/nlu/model.py", line 380, in parse
    component.process(message, **self.context)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/rasa_contrib/nlu/extractors/bilstm_crf_tf_entity_extractor.py", line 112, in process
    self.predict_fn = predictor.from_saved_model(real_result_dir)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/tensorflow_core/contrib/predictor/predictor_factories.py", line 153, in from_saved_model
    config=config)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/tensorflow_core/contrib/predictor/saved_model_predictor.py", line 153, in __init__
    loader.load(self._session, tags.split(','), export_dir)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/tensorflow_core/python/util/deprecation.py", line 324, in new_func
    return func(*args, **kwargs)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/tensorflow_core/python/saved_model/loader_impl.py", line 268, in load
    loader = SavedModelLoader(export_dir)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/tensorflow_core/python/saved_model/loader_impl.py", line 284, in __init__
    self._saved_model = parse_saved_model(export_dir)
  File "/home/liujiepeng/KG/QA/TaskQA/WeatherBot/micro_weatherbot_CN_env_py36/lib/python3.6/site-packages/tensorflow_core/python/saved_model/loader_impl.py", line 83, in parse_saved_model
    constants.SAVED_MODEL_FILENAME_PB))
OSError: SavedModel file does not exist at: /tmp/tmpno3k5753/nlu/addons_ner_bilstm_crf_tf/{saved_model.pbtxt|saved_model.pb}

这个错误主要是源于 ERROR asyncio - Task exception was never retrieved吗？请问下，这里的错误该如何消除，非常感谢！