Good evening I tried to install Koha on a new debian based server. I failed because rabbidmq-server couldn't be configured: Setting up rabbitmq-server (4.0.5-6+deb13u2) ... Created symlink '/etc/systemd/system/multi-user.target.wants/rabbitmq-server.service' → '/usr/lib/systemd/system/rabbitmq-server.service'. Job for rabbitmq-server.service failed because the control process exited with error code. See "systemctl status rabbitmq-server.service" and "journalctl -xeu rabbitmq-server.service" for details. invoke-rc.d: initscript rabbitmq-server, action "start" failed. ● rabbitmq-server.service - RabbitMQ Messaging Server Loaded: loaded (/usr/lib/systemd/system/rabbitmq-server.service; enabled; preset: enabled) Active: activating (auto-restart) (Result: exit-code) since Tue 2026-03-17 16:15:56 CET; 18ms ago Invocation: 1b25014fa7934c3d92e16dd4f22bd900 Process: 20645 ExecStart=/usr/lib/rabbitmq/bin/rabbitmq-server (code=exited, status=1/FAILURE) Main PID: 20645 (code=exited, status=1/FAILURE) Status: "Standing by" Mem peak: 69.5M CPU: 854ms dpkg: error processing package rabbitmq-server (--configure): installed rabbitmq-server package post-installation script subprocess returned error exit status 1 dpkg: dependency problems prevent configuration of koha-common: koha-common depends on rabbitmq-server; however: Package rabbitmq-server is not configured yet. dpkg: error processing package koha-common (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: rabbitmq-server koha-common Error: Sub-process /usr/bin/dpkg returned an error code (1) What went wrong? How to fix?