ERROR asyncio - Task exception was never retrieve

rasa train nlu successfully, rasa shell nlu successfully, rasa train core successfully, but, I chat with rasa failed in last turn of the dialogue,

ok let me see what I can find
2019-09-11 11:53:44 ERROR    asyncio  - Task exception was never retrieved
future: <Task finished coro=<configure_app.<locals>.run_cmdline_io() done, defined at /home/powerop/work/project/rasa-master/rasa/core/run.py:122> exception=TimeoutError()>
Traceback (most recent call last):
  File "/home/powerop/work/project/rasa-master/rasa/core/run.py", line 126, in run_cmdline_io
    server_url=constants.DEFAULT_SERVER_FORMAT.format(port)
  File "/home/powerop/work/project/rasa-master/rasa/core/channels/console.py", line 137, in record_messages
    async for response in bot_responses:
  File "/home/powerop/.local/lib/python3.6/site-packages/async_generator/_impl.py", line 366, in step
    return await ANextIter(self._it, start_fn, *args)
  File "/home/powerop/.local/lib/python3.6/site-packages/async_generator/_impl.py", line 205, in throw
    return self._invoke(self._it.throw, type, value, traceback)
  File "/home/powerop/.local/lib/python3.6/site-packages/async_generator/_impl.py", line 209, in _invoke
    result = fn(*args)
  File "/home/powerop/work/project/rasa-master/rasa/core/channels/console.py", line 102, in send_message_receive_stream
    async for line in resp.content:
  File "/home/powerop/.local/lib/python3.6/site-packages/aiohttp/streams.py", line 40, in __anext__
    rv = await self.read_func()
  File "/home/powerop/.local/lib/python3.6/site-packages/aiohttp/streams.py", line 329, in readline
    await self._wait('readline')
  File "/home/powerop/.local/lib/python3.6/site-packages/aiohttp/streams.py", line 297, in _wait
    await waiter
  File "/home/powerop/.local/lib/python3.6/site-packages/aiohttp/helpers.py", line 585, in __exit__
    raise asyncio.TimeoutError from None
concurrent.futures._base.TimeoutError
2019-09-11 11:58:34 ERROR    rasa.core.processor  - Encountered an exception while running action 'action_search_restaurants'. Bot will continue, but the actions events are lost. Please check the logs of your action server for more information.
2019-09-11 12:03:35 ERROR    rasa.core.processor  - Encountered an exception while running action 'action_suggest'. Bot will continue, but the actions events are lost. Please check the logs of your action server for more information.

I think the problem is just that you are not running the action server, see Actions