Before upgrading the server,
/var/urbackup was a symlink to another (encrypted) location, and everything was fine.
Now sqlite it no longer accepts that.
WARNING: SQLite: cannot open file at line 36982 of [3bfa9cc97d] errorcode: 14 WARNING: SQLite: os_unix.c:36982: (40) openDirectory(/var/urbackup) - errorcode: 14
I was able to bypass this by using bindfs.