I installed Collabora Online on Debian GNU/Linux 11 (bullseye)
sudo nano /etc/coolwsd/coolwsd.xml
ssl.enable = true
ssl.termination = false
journalctl -xeu coolwsd.service
Mar 09 21:26:40 node131235-cloud.net coolwsd[3897]: terminate called after throwing an instance of 'Poco::SystemException'
Mar 09 21:26:40 node131235-cloud.net coolwsd[3897]: what(): System exception
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Main process exited, code=killed, status=6/ABRT
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Failed with result 'signal'.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Start request repeated too quickly.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Failed with result 'signal'.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: Failed to start Collabora Online WebSocket Daemon.
systemctl status coolwsd
● coolwsd.service - Collabora Online WebSocket Daemon
Loaded: loaded (/lib/systemd/system/coolwsd.service; enabled; vendor preset: enabled)
Active: failed (Result: signal) since Thu 2023-03-09 21:26:40 -04; 11 minutes ago
Process: 3897 ExecStart=/usr/bin/coolwsd --version --o:sys_template_path=/opt/cool/systemplate --o:child_root_path=/opt/cool/child-roots --o:file_server_root_path=/usr/share /coolwsd (code=killed, signal=ABRT)
Main PID: 3897 (code=killed, signal=ABRT)
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Failed with result 'signal'.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Scheduled restart job, restart counter is at 5.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: Stopped Collabora Online WebSocket Daemon.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Start request repeated too quickly.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: coolwsd.service: Failed with result 'signal'.
Mar 09 21:26:40 node131235-cloud.net systemd[1]: Failed to start Collabora Online WebSocket Daemon.
I need to activate to be able to use apache 2 proxy