Asyncio - Task exception was never retrieved error RASA 2.1.0

I’ve managed to solve this thanks to this comment.

As the action sometimes took > 10s to run I had to change the value of:

DEFAULT_STREAM_READING_TIMEOUT_IN_SECONDS = 10

to ~20s in ..\AppData\Local\Programs\Python\Python37\Lib\site-packages\rasa\core\channels which ended up working perfectly

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