当我运行rasa shell与chatbot交互时，我正在尝试使用rasa框架开发简单的chatbot，它显示此错误：

ERROR    asyncio  - Task exception was never retrieved
future: <Task finished coro=<RestInput.on_message_wrapper() done,defined at /home/oretes/anaconda3/lib/python3.7/site-packages/rasa/core/channels/channel.py:392> exception=ValueError('X.shape[1] = 256 should be equal to 128,the number of features at training time')>

ERROR    asyncio  - Task exception was never retrieved
future: <Task finished coro=<RestInput.on_message_wrapper() done,the number of features at training time')>

当我运行“ rasa train”命令时，我正在尝试使用rasa框架开发简单的聊天机器人，此后我运行“ rasa shell”与chatbot进行交互，显示此错误：ERROR任务异常从未发生检索到的未来。

我正在使用rasa框架

我正在尝试与chatbot进行正常对话，这就是为什么我运行“ rasa shell”命令，但是当我说“ hi”时却显示错误：ERROR以后从未检索到任务异常。