Hi!
I updated from PHP7.4 to PHP8.1 via apt full-upgrade and it looks like this upgrade can break Nextcloud 23.
At the moment, I get this messagers from my nextcloud instance:
This version of Nextcloud is not compatible with > PHP 8.0.
You are currently running 8.1.1.
So far I have not done much troubleshooting on this, just maybe delay the PHP upgrade if you run Nextcloud.
-Cord