forward websocket to websocket

I'm using the nginx as reverse proxy for django and React with as config

worker_processes  1;
events {
    worker_connections  1024;
}
http{
    server{
        include mime.types;
        default_type application/octet-stream;
        keepalive_timeout  240;
        sendfile on;
        listen 8001;
        server_name 127.0.0.1;

        location /{
            proxy_pass http://localhost:3000;
        }

        location /backend {
                proxy_pass http://127.0.0.1:8000;
        }   
 }
}

its working fine but i want to forward websocket for react hot loading. i have still no solution after lot of googling. currently it have connection error as from chrome console

WebSocket connection to 'ws://127.0.0.1:8001/sockjs-node' failed: Error during WebSocket handshake: Unexpected response code: 404

Copyright Notice：Content Author:「Naresh Teli」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/65324178/forward-websocket-to-websocket