Nginx Welcome page error

I tried the quick install and i’m getting nginx welcome page after 4-5 attempts can’t figure out what is causing this. I purged all the jitsi packages including nginx and tried clean installation but still its reffering to welcome page

root@webrtc:/home/webrtc_admin# nginx -t
nginx: [emerg] host not found in upstream "localhost" in /etc/nginx/sites-enabled/
nginx: configuration file /etc/nginx/nginx.conf test failed

any help?

Check line 63 in /etc/nginx/sites-enabled/

it was localhost now stuck here