https://bugzilla.wikimedia.org/show_bug.cgi?id=66687
--- Comment #12 from xqt info@gno.de --- It's not part of the nightly dump until the patch is committed after the review process. You may get the patched file from https://git.wikimedia.org/blob/pywikibot%2Fcompat/1f55aea336bda2349fdc73fe3e...