We have a surprising case of a word document not properly converting to PDF for annotation in online grading. We have used online grading for a while with no problems and we have unoconv installed and running. With this particular word doc, the numbering skipped one of the items in the Page index, and consequently the heading in the main document.
In our troubleshooting we tried to convert the word doc to a pdf outside Moodle and then upload the pdf, this worked perfectly. Trying to resubmit the same word doc several times kept giving the same error.
Anyone ever had the same problem?