Sorry, we can't help you if you can't provide the information we ask for. You should ask someone you know to read this thread and help you provide a Debug ID for a sync the produces the error.
Paste "PLHJ3W3A" into the Zotero search bar in All Fields & Tags mode. That item, which you added to your library in the last day, used to be an attachment and is now a thesis item. That shouldn't be possible. Do you remember how you created that item or how it might have changed from an attachment to a parent item? Did you use some plugin to do that? (The "Create Parent Item" function creates a separate parent item.)
In any case, you should delete that item and empty the trash.
Yes, I used the plugin "jasminum_1.1.10", which is also another problem for me, I can't extract the pdf from CNKI, so he generated an html, I used the "jasminum_1.1.10" software on the html he generated
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If so, can you provide a Debug ID (different from a Report ID) for a sync attempt that produces this?
[error report removed — D.S.]
https://www.zotero.org/support/forum_guidelines#be_patient
You have a corrupted item.
Paste "PLHJ3W3A" into the Zotero search bar in All Fields & Tags mode. That item, which you added to your library in the last day, used to be an attachment and is now a thesis item. That shouldn't be possible. Do you remember how you created that item or how it might have changed from an attachment to a parent item? Did you use some plugin to do that? (The "Create Parent Item" function creates a separate parent item.)
In any case, you should delete that item and empty the trash.