Impossible to create a footnote with Zotero
I am working on a document created some years ago and I cannot add a new footnote with Zotero. I can edit the previous one though. The error message tells me that Zotero encountered an error during the update of the document and if I want to read the instructions to solve the problem (https://www.zotero.org/support/kb/debugging_broken_documents). I did read them and tried every solution but nothing is working.
If so, the debugging instructions include directions to split your document to isolate a problem. Have you tried that? What happened?
Did you come along something else?