Wss. not working from private node

Mainnet
1

I cloned the node and node is fully synced but the WSS url is not working can i get what i am missing my NGINX setup is :

    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;
    proxy_pass http://127.0.0.1:8546/;
  }

Please let me know if i am missing anything .