On a vanilla install of the latest MediaWiki version out of git (I'm using vagrant-wmf to set up a new vm), trying to run action=info on a non-existent page results in the following error:

Fatal error: Call to a member function getId() on a non-object in /srv/mediawiki/includes/actions/InfoAction.php on line 175

I haven't been able to figure out what has changed since wmf6, since this works fine on enwiki: https://en.wikipedia.org/wiki/Thisdoesnotexist?action=info

Version: 1.21.x
Severity: major