Hello, Our Mediawiki has just been upgraded from 1.35.8 to 1.39. update.php was run. All seems fine except an issue with Proofread Page extension and .djvu files. <pagelist> is no longer populated with the list of pages, "invalid interval" is reported. Individual pages from .djvu are also not rendered with Page:file.djvu/pagenumber. Proofread Page still works with PDF files. Here is an example of non-working index page: https://lituapedija.net/wiki/Indeksas:LE01.djvu It work for PDF and this is how it looked for .djvu too before upgrade: https://lituapedija.net/wiki/Indeksas:LE01.pdf I don't see anything relevant in mediawiki debug log. Mediawiki is running on Debian Bullseye (current stable), https://lituapedija.net/wiki/Specialus:Versija. Any hints or help would be greatly appreciated! Šarūnas Burdulis for lituapedija.net