Can you provide a Debug ID (different from a Report ID) for a sync attempt that results in an error?

We would need a Debug ID to say more.

Note 'Abstract 我们研究了...' too long for item '11977770/RZF6YBM3'

OK, you have an Abstract field that's too long — likely just from the wrong data being saved to it. Edit that item manually to shorten the field.