sync issues

[theSNEW]

In Lightroom Classic 13.0.1 my sync activity is always unfinished. It affects about 30 photos though the sync details/errors aren't very descriptive. Does anyone know what the best course of action is for the statuses 'error' 'metadata'  etc. Having looked at https://lightroom.adobe.com/ I see no sync errors.

In Lightroom Classic I've tried exporting a small selection of the ones not syncing and tried reimporting them using Lightroom CC 7.0.0 and although they do import without error, the sync also doesn't complete there. The photos are from different cameras so it seems unlikely that it would be a source issue.

This is on macOS 13.6.1