(Unicode Encoding Conflict) - in the name of a PDF

Greetings,

I keep running into the following issue: (Unicode Encoding Conflict) is inserted into the file name when a PDF is attached to a record. As a result the link does not form and I have to click to select a file. I am using ZotFile for renaming, but I have been using it for a long time and this weird behavior started very recently --- I think with the latest Zotero update.

I will appreciate any suggestions on how to fix this.
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