pandoc -s -f latex -o "File.docx" -t docx "File.tex"
but I get that error. It is not an overly complex document, but it does use bib(la)tex. It compiles fine to pdf with latex.
Any pointers as to what I can do? (I also tried make4ht, but it gave me an .odt with missing block quotes and page numbers.)
Cheers,
Christian