Hi, I was not paying attention during an OwnCloud upgrade and so I accidentally upgraded from 8.2 to 9.1, instead of 9.0. Now I am stuck with an Owncloud server running in maintenance mode and when I try to get it out of that using the command "sudo -u www-data php occ upgrade" it tells me the upgrade is not supported. Well, I already knew that, but how to get out of this? An ideas?
I'm running on a Raspberry Pi