In case you're getting a warning message after the latest Nginx stable update v1.24.0.
nginx: [warn] protocol options redefined for 0.0.0.0:443 in /etc/nginx/sites-enabled/default:3
nginx: [warn] protocol options redefined for [::]:443 in /etc/nginx/sites-enabled/default:4
You can manually fix it easily, just add the "http2" parameter in the "listen" (443 only) directive on this file /etc/nginx/sites-enabled/default.
listen 443 ssl http2 default_server;
listen [::]:443 ssl http2 default_server;
And that's it!
Obviously, it will be fixed in the next Webinoly release v1.17.3.