Due to https://gerrit.wikimedia.org/r/c/mediawiki/extensions/SocialProfile/+/444441 (which I apologise, broke Mirage; I only realised after), Mirage's SocialProfileAvatarLookup is broken, since it uses wAvatar::getAvatarUrlPath(), which was removed in that patch.
It seems Mirage is the only one affected by the change from a codesearch.