Invalid attachment link mode 'undefined' in Zotero.Item.attachmentLinkMode setter

When synching Zotero with online account, I get the following error message :

can't assign to property "added" on "Invalid attachment link mode 'undefined' in Zotero.Item.attachmentLinkMode setter": not an object

Is there a way I could know or trace the 'offending' item or attachment so I could either solve the issue or simply delete it?

Thanks in advance.


Report ID : 2035829856
  • 5.0.87
    You're running a version of Zotero from May 2020. You should install the latest version from the download page and figure out why you haven't received automatic updates in several year.
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