I routinely keep the apps updated on my 4.4-9 errata1262 server. A couple of days ago, I got the notice that an upgrade from 23.0.5-0 to 23.0.6-0 was available. I chose to upgrade it using the UCS gui.
Everything seemed to go okay.
When I tried to access files from my phone, they were not available. When I go to the web login, I get "Maintenance Mode - his Nextcloud instance is currently in maintenance mode, which may take a while. This page will refresh itself when the instance is available again.
Contact your system administrator if this message persists or appeared unexpectedly."
How do I resolve this?