https://bugzilla.wikimedia.org/show_bug.cgi?id=72674
--- Comment #1 from JAn Dudík jan.dudik@gmail.com --- I found connection with https://bugzilla.wikimedia.org/show_bug.cgi?id=71115
When is in some page present old interwiki to za:, bot have this problem and cannot continue
after https://cs.wiktionary.org/w/index.php?title=Kategorie:Francouz%C5%A1tina&... this edit bot works as expected