WebSocket handshak Error

[Fatemeh Ahmadzadeh]

Hi my friends
I create daphne.sock for websocket and gunicorn.sock for http request and and in nginx.conf proxy_pass equals to unixes.

 but have this errors 

1.       failed: Error during WebSocket handshake: Unexpected response code: 404

2.       failed: Error during WebSocket handshake: Unexpected response code: 500

according to this  webpage 

https://avilpage.com/2018/05/deploying-scaling-django-channels.html
but I have failed: Error during WebSocket handshake: Unexpected response code: 404
Please help me