This morning I started the update from i guess 22.2.0 to 22.2.3 via web updater. Everything seems to work fine, no error message no error in log file.
After the update the web updater normally rederects to regular user interface, with this update ist returns to the “Start Update” page. Pressing “Start Update” again it starts update again with no error and rederects again to “Start Update” and so on (loop of death 
).
I’ve tried to update manually with occ, but same problem. Same happens when I try to update manually this way with my config and data https://docs.nextcloud.com/server/22/admin_manual/maintenance/manual_upgrade.html .
Even occ maintenance:repair didn’t help and dont shows any error.
Seems my nextcloud isn’t able to notice the update is already done.
Anyone an idea what happens or what I can do?
Thx for your help.
New information. sudo -u www-data php occ config:system:get version gives “Nextcloud or one of the apps require upgrade - only a limited number of commands are available
You may use your browser or the occ upgrade command to do the upgrade
22.2.0.2”
So even if there is no error within the updater, something seems to go wrong.
Same problem. I wanted upgrade from 21 to 22 with update manually (occ upgrade). It’s ok. No problem but at the end, my site loop on upgrade page.