Error – Kontact ‘Could not create collection outbox, resourceId 12’

[papapenguin]

I'm using Kubuntu 24.04 (Kontact 4:23.08.5-0ubuntu4) and this error just popped up. I’ve seen similar errors, but with different folders and different resourceId numbers.

Some have deleted the offending folders in akonadiconsole. Should I simply delete my outbox?

Is there a better way to repair this error?