While trying to view history pages when testing mwf.8 of the Wikidata build extension on mwdebug1002.
Example: https://test.wikidata.org/w/index.php?title=Q37279&action=history
[{exception_id}] {exception_url} ErrorException from line 118 of /srv/mediawiki/php-1.31.0-wmf.8/extensions/Wikidata/extensions/Wikibase/repo/includes/Content/ItemHandler.php: PHP Error: Argument 1 passed to Wikibase\HistoryEntityAction::__construct() m Catchable fatal error: Argument 1 passed to Wikibase\HistoryEntityAction::__construct() must be an instance of Article, WikiPage given in /srv/mediawiki/php-1.31.0-wmf.8/extensions/Wikidata/extensions/Wikibase/repo/includes/Content/ItemHandler.php on line
#0 /srv/mediawiki/php-1.31.0-wmf.8/extensions/Wikidata/extensions/Wikibase/repo/includes/Actions/HistoryEntityAction.php(46): MWExceptionHandler::handleError(integer, string, string, integer, array, array) #1 /srv/mediawiki/php-1.31.0-wmf.8/extensions/Wikidata/extensions/Wikibase/repo/includes/Content/ItemHandler.php(118): Wikibase\HistoryEntityAction->__construct(WikiPage, RequestContext, Wikibase\Repo\Content\EntityContentFactory, Wikibase\Lib\Store\LanguageFallbackLabelDescriptionLookup) #2 /srv/mediawiki/php-1.31.0-wmf.8/includes/actions/Action.php(107): Closure$Wikibase\Repo\Content\ItemHandler::getActionOverrides(WikiPage, RequestContext) #3 /srv/mediawiki/php-1.31.0-wmf.8/includes/actions/Action.php(154): Action::factory(string, WikiPage, RequestContext) #4 /srv/mediawiki/php-1.31.0-wmf.8/includes/MediaWiki.php(155): Action::getActionName(RequestContext) #5 /srv/mediawiki/php-1.31.0-wmf.8/includes/MediaWiki.php(768): MediaWiki->getAction() #6 /srv/mediawiki/php-1.31.0-wmf.8/includes/MediaWiki.php(523): MediaWiki->main() #7 /srv/mediawiki/php-1.31.0-wmf.8/index.php(43): MediaWiki->run() #8 /srv/mediawiki/w/index.php(3): include(string) #9 {main}