upstream channels-backend {
    server localhost:9099;
}
    location / {
        include proxy_params;
        proxy_pass http://0.0.0.0:9089;
        try_files $uri @proxy_to_app;
    }

Supervisor localhost:9099

=================================================


upstream channels-backend {
    server localhost:8099;
}


    location / {
        include proxy_params;
        proxy_pass http://0.0.0.0:8089;
        try_files $uri @proxy_to_app;
    }


Supervisor localhost:8099




alexander@ubuntu-clear:/etc/nginx/sites-enabled$ sudo systemctl restart nginx
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.

alexander@ubuntu-clear:/etc/nginx/sites-enabled$ systemctl status nginx.service
● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Mon 2021-01-11 12:33:47 UTC; 28s ago
     Docs: man:nginx(8)
  Process: 4253 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0/SUCCESS)
  Process: 32377 ExecReload=/usr/sbin/nginx -g daemon on; master_process on; -s reload (code=exited, status=0/SUCCESS)
  Process: 9487 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)
 Main PID: 912 (code=exited, status=0/SUCCESS)