Borked install and can't restore backup

[hbmatyi]

Hey all, tried to downgrade from 10.11.2 to 10.10.7 on Ubuntu 24.04, which did not work, so now I am trying to restore my backup (manual backup, ran weekly, last ran when the server was on 10.11.1). 
I messed up with my backup script (no, I did not take a backup using the built in feature, would have been nice if I knew about it before starting this whole fiasco), doing the backup slightly wrong, by just zipping the necessary folders, instead of properly preserving permissions, but I have redone them I think (most things are just owned by jellyfin:jellyfin, with a few exceptions). I discovered this because it would fail with an error code leading me to insufficient permissions, but now that doesn't happen, so I assume I have fully fixed the permission problem.
Problem is, if I paste my files into the correct places, the server still does not want to start back up again.

I have triedthe backup restoration process on 10.11.2, 10.11.1 and 10.10.7, all giving the exact same exceptions.

Here is my journalctl for one of the restart attempts:

https://pastebin.com/vJ8hYxhU

Any help is appreciated, it seems like the issue is with the migration.xml file, but I can't decipher what exactly.

[hbmatyi]

Fixed if someone comes across this: I tried deleting the migrations.xml file manually, but didn't delete the migrations.xml.backup file alongside it, deleting both and starting without a migration file fixed the issue for me.