## Steps to reproduce * Setup an Ubuntu 22.04 minimal VM image and ssh into it * cd /tmp * git clone https://git.ispconfig.org/ispconfig/ispconfig-autoinstaller.git * cd ispconfig-autoinstaller * git checkout ubuntu-22 * ./ispc3-ai.sh --channel=dev --use-ftp-ports=40110-40210 --unattended-upgrades=autoclean,reboot * reboot the VM ## Correct behaviour https://$MYHOSTNAME:8081/rspamd/ should show the rspamd login page. ## What happens instead Error 500. ==> /var/log/apache2/error.log <== [Fri Nov 04 14:35:37.762675 2022] [proxy:warn] [pid 13376:tid 139972304660032] [client 79.196.157.23:38548] AH01144: No protocol handler was valid for the URL /rspamd/ (scheme 'http'). If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule. ==> /var/log/apache2/other_vhosts_access.log <== static.66.234.12.49.clients.your-server.de:8081 79.196.157.23 - - [04/Nov/2022:14:35:37 +0100] "GET /rspamd/ HTTP/2.0" 500 650 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36" ## Environment See reproduction steps above. ## Proposed fix `a2enmod proxy_http` somewhere in ISPconfig's install procedure fixes this. Previously (stable ISPconfig releases) this was the case.