Django-SocketIO: Key Error at /socket.io/xhr-polling//<my-id>

Question

I have setup an example project for django-socketio from https://github.com/stephenmcd/django-socketio. My project is running at port 8001 and socketio server is running at port 8002. But its showing a KeyError for 'socketio' in below section:

At django_socketio/views.py:

 socket = SocketIOChannelProxy(request.environ["socketio"])