Make sure you are having virtualenv (virtualenv or virtualenvwrapper)

Create a virtualenv and activate then run in terminal

pip install -r requirements.txt
./manage.py migrate
./manage.py loaddata sites
./manage.py runserver

Channels change django in multiprocess model. We don't run everything in a wsgi server. Runserver will work as worker server where django runs actual logic and asgi server will work as interface server that's capapble of serving websockets.

Install asgi server

pip install asgi_redis

Run asgi-server and django runserver

asgi-server
python manage.py runserver

Browse on 127.0.0.1:8000