User blog comment:Rappy 4187/Technical Update: January 11, 2016/@comment-30384903-20160112165533/@comment-126761-20160113111237

Indeed, we wanted to get the Dev scripts into the MediaWiki namespace where they can be updated while also going through our security review system. We do apologise that it broke a few things, but it's something that had to be done for the longer-term benefits.

We're working on a quick fix that should stop the error messages appearing for code references that don't include 'MediaWiki', and we'll try and get it live as soon as we can.