Endnote Generator error messge

[morleyjeff]

I successfully converted footnotes to end notes in two Google Docs But a third is stubbornly resistant. I keep getting "Something went wrong" error message. No explanation given. Here's the file that won't convert. https://docs.google.com/document/d/1sxAiIMSgcAyucBPk7eO347shNu4xWZuZbyKxBQSfaTc/edit#