Zotero Import error-keys dont match and how to resolve it

I am unable to import Zotero Items to my Paperpile library. I get the message in zotero that the keys don.t match. Earlier I was successful in importing all zotero items. I cleared Zotero and added new items which I wanted to import to Paperpile. The second time around I have this problem of mismatched key. How can I resolve this?

Is this error in Zotero or Paperpile? Can you send us a screenshot and/or the exact error message?

I still face the same problem with importing from Zotero. But I found a workaround. Import Zotero-to-Mendeley and Import Mendeley to Paperpile-I had no issue with Mendeley.