This first appeared during the "gateway timeout" incident yesterday.
Starting then and continuing now, ios joplin says it cannot sync some items, because they are too large.
Thing is, these items were removed from joplin data, and the resources directory, some months ago.
So these "large items", which no longer exist, have somehow snuck back and are making a spurious error.
(This looks almost like the status panel is refusing to update, in spite of pressing refresh, restarting the app, and rebooting the phone.)
ios app says joplin 12.9.2, database v41
windows joplin (no errors)
Joplin 2.9.17 (prod, win32)
Client ID: ef30f90de1df45ee92e636dc6485b4fe
Sync Version: 3
Profile Version: 41
Keychain Supported: Yes
Revision: a84a8e7