Got error when trying to sync

I’m using Anki 2.0.70(20070.1) on iPhone. I just fully synced (download from the server). Then I learned some cards and trying to sync the result. But I got the following error when I doing that.

I checked the database and media and sync again, the error is the same. Could anyone help me to take a look?

2 posts were merged into an existing topic: “Error decoding response body” sync error