I updated to MW1.34 at the beginning of January and turned on debug for other reasons. When I now go to Special Pages, there is a notice that shows up twice, when I go to the actual "Status of external links" page it shows up 5 times:
Notice: Did not find alias for special page 'RottenLinks'. Perhaps no aliases are defined for it? [Called from MediaWiki\Special\SpecialPageFactory::getLocalNameFor in /home/xxx.ca/includes/specialpage/SpecialPageFactory.php at line 731] in /home/xxx.ca/includes/debug/MWDebug.php on line 333
It's just a notice, but it doesn't seem to serve a function in production, so flagging it.