Hi When trying to install Koha 22.11.05-2 via package installation on a completely new machine with 4 virtual CPUs, 4 GB RAM and Debian GNU/Linux 11 the following error appears: rabbitmq-server (3.8.9-3) wird eingerichtet ... Job for rabbitmq-server.service failed because the control process exited with error code. See "systemctl status rabbitmq-server.service" and "journalctl -xe" for details. invoke-rc.d: initscript rabbitmq-server, action "start" failed. ● rabbitmq-server.service - RabbitMQ Messaging Server Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; vendor preset: enabled) Active: activating (auto-restart) (Result: exit-code) since Thu 2023-05-11 15:14:44 CEST; 4ms ago Process: 38141 ExecStart=/usr/lib/rabbitmq/bin/rabbitmq-server (code=exited, status=1/FAILURE) Main PID: 38141 (code=exited, status=1/FAILURE) CPU: 1.071s Mai 11 15:14:44 koha systemd[1]: Failed to start RabbitMQ Messaging Server. Mai 11 15:14:44 koha systemd[1]: rabbitmq-server.service: Consumed 1.071s CPU time. Can someone please tell me how to solve this problem? You can see the output of "systemctl status rabbitmq-server.service" resp. "journalctl -xe" just below. Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch koha@koha:~$ sudo systemctl status rabbitmq-server.service ● rabbitmq-server.service - RabbitMQ Messaging Server Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; vendor preset: enabled) Active: activating (auto-restart) (Result: exit-code) since Thu 2023-05-11 15:19:57 CEST; 3s ago Process: 41298 ExecStart=/usr/lib/rabbitmq/bin/rabbitmq-server (code=exited, status=1/FAILURE) Main PID: 41298 (code=exited, status=1/FAILURE) CPU: 1.066s koha@koha:~$ sudo journalctl -xe ░░ An ExecStart= process belonging to unit rabbitmq-server.service has exited. ░░ ░░ The process' exit code is 'exited' and its exit status is 1. Mai 11 15:20:47 koha systemd[1]: rabbitmq-server.service: Failed with result 'exit-code'. ░░ Subject: Unit failed ░░ Defined-By: systemd ░░ Support: https://www.debian.org/support ░░ ░░ The unit rabbitmq-server.service has entered the 'failed' state with result 'exit-code'. Mai 11 15:20:47 koha systemd[1]: Failed to start RabbitMQ Messaging Server. ░░ Subject: A start job for unit rabbitmq-server.service has failed ░░ Defined-By: systemd ░░ Support: https://www.debian.org/support ░░ ░░ A start job for unit rabbitmq-server.service has finished with a failure. ░░ ░░ The job identifier is 3262 and the job result is failed. Mai 11 15:20:47 koha systemd[1]: rabbitmq-server.service: Consumed 1.127s CPU time. ░░ Subject: Resources consumed by unit runtime ░░ Defined-By: systemd ░░ Support: https://www.debian.org/support ░░ ░░ The unit rabbitmq-server.service completed and consumed the indicated resources. Mai 11 15:20:48 koha sudo[41974]: koha : TTY=pts/0 ; PWD=/home/koha ; USER=root ; COMMAND=/usr/bin/journalctl -xe Mai 11 15:20:48 koha sudo[41974]: pam_unix(sudo:session): session opened for user root(uid=0) by koha(uid=1000)