Hi, I have a debian 9 server with http2 mod enabled, but it has no effect because the mpm-prefork module is enabled. Problem is, I can't disable it (and enable mpm-event for instance): everytime Apache restart, prefork is enabled. If I force to remove it by deleting the "mods-available" link, Apache2 does not start. I know that to use mpm-event or worker, you need to use PHP-FPM. This is installed but I don't know how to configure it to have it working. Thanks in advance for any help.