See URL. Some weird output instead of size info somewhere, probably: we even have "× pixels, file size: 93 KB, MIME type: image/vnd.djvu" shown in a pre, thumbs URLs are not even included.
Seems a regression because the file had been added to https://no.wikipedia.org/wiki/Kristnisaga
Bigger example at https://commons.wikimedia.org/wiki/File:Federal_Cases_28_extra.djvu
Version: unspecified
Severity: normal
URL: https://commons.wikimedia.org/wiki/File:Kristnisaga.djvu