Random maintenace mode

docker: nc 23.0.2

I did all of this Web Interface dismisses Keypresses

and i also have the phenomenon of getting random maintenance modes on my server.

Everything is runnig and working for some time/days - and then suddenly i get the messages everywhere that it is in maintenance mode.

I did try to set the log level to max - but i cannot find any entry for “maintenace” in the whole nextcloud.log.

is this event meant to be logged - what yould i need to search for?
Any other Ideas.

I can simply disable the maintenance mode and everything is fine again. - but it keeps coming back…