Digging a bit further thanks to the log, I found a few other things I could do that helped me return to normal:
- The several instances of
/var/www/nextcloud/data/appdata_ocxxxxxxxled me to this thread that recommended usingocc config:system:delete xxxxxxxto reset the specific user’s app data. - Also, I disabled some apps temporarily to be safe with
occ app-disable. - And finally, found that
occ maintenance:repairskipped some of the heavier fixes by default, so I usedocc maintenance: repair --include-expensiveto make the fixes more thorough.