I have followed the channels tutorial but while running these error throw
Version of the packages is channels==2.1.2 Django==2.0.4<
You should put routing.py inside mysite/mysite/ not mysite/ otherwise you won't be able to use ASGI_APPLICATION = mysite.routing.application in the settings file and you get that error.
routing.py
mysite/mysite/
mysite/
ASGI_APPLICATION = mysite.routing.application