I had come across same issue as JGreenLowe. Uninstalling rasa and rasa-sdk and reinstalling rasa==1.4.3 , I did not got RuntimeError: This event loop is already running but I got Exception occurred while handling uri: ‘http://localhost:5005/webhooks/rest/webhook?stream=true&token=’ which was solved by following Rasa Shell error following tutorial · Issue #5019 · RasaHQ/rasa · GitHub .
pip3 uninstall rasa
pip3 uninstall rasa-sdk
And reinstall:
pip3 install rasa==1.4.3
After this run rasa shell:
if its working then its fine,
elif got uri exception then:
pip3 install sanic==19.9.0
else pass