I am trying to follow the tutorial here
https://channels.readthedocs.io/en/latest/tutorial/part_2.html and check if channel layer can communicate with Redis. The only differ
i have the same issue,
the problem was the version of my python and also of the channels.
the tutorial woks perfectly with python=3.6, channels-redis 2.3.1 and daphne 2.0.2, channels =2.0.
You can follow the channels documentation of the channels version you have install.