This has happened to me several times during the last month or two. The error occurs while trying to sync. Checking database runs successfully but sync afterwards always still fails. Anything in particular I should be looking for?
Do you use any add-ons? It seems like some of your review entries are not being synced.
I tried it with add-ons disabled, no difference (assuming you’re talking about the sync’ing action, not some corruption occurring earlier).
I was talking about the latter. If you force a full sync, does the issue come back if you keep add-ons disabled?
It’s hard to live without some add-ons (e.g. image resizer and frozen fields). I’ll try selectively disabling some of them for a while.