Some PDF uploads fails with error in Font.php

Hi

When trying to upload PDF files, then they sometimes fail with this error: https://cl.ly/3d163U0m0T3Y.

You can get the file for testing here https://detgodeliv.regionsyddanmark.dk/wp-content/themes/detgodeliv/Kontur%20Fanoe%202016_web.pdf.

Suggestions?