Thread:Semantic-mediawiki.org:Community portal/Error on talk pages

Our talk/discussion pages are getting a SMW-related error that I have no clue about:

Catchable fatal error: Argument 2 passed to SMW\MediaWiki\Hooks\ArticleFromTitle::__construct must implement interface Page, boolean given, called in /home/services/xf/public_html/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Hooks/HookRegistry.php on line 446 and defined in /home/services/xf/public_html/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Hooks/ArticleFromTitle.php on line 39

We're on the following versions:

MW 1.25.1 SMW 2.2.2 Semantic Forms 3.4

Anyone have any helpful insights? As-is, our talk pages are completely unusable.