Statistics Explained

Internal error

[ZfkXzoLNOatabjlutQMiLQAAANI] /statistics_explained/index.php?title=Special:Collection/render_article/&arttitle=Fertility_statistics&oldid=282879&writer=rl&printDraft=0 Error from line 29 of /ec/prod/app/webroot/home/statistics_explained/extensions/StatexpEcas/lib/autoload.php: Call to undefined method AutoLoader::matchingFiles()

Backtrace:

#0 /ec/prod/app/webroot/home/statistics_explained/extensions/StatexpCollection/includes/SpecialStatexpCollection.php(574): AutoloaderSEEcas::loader(string)
#1 /ec/prod/app/webroot/home/statistics_explained/extensions/StatexpCollection/includes/SpecialStatexpCollection.php(212): SpecialStatexpCollection->renderArticle(Title, integer, string)
#2 /ec/prod/app/webroot/home/statistics_explained/includes/specialpage/SpecialPage.php(600): SpecialStatexpCollection->execute(string)
#3 /ec/prod/app/webroot/home/statistics_explained/includes/specialpage/SpecialPageFactory.php(635): SpecialPage->run(string)
#4 /ec/prod/app/webroot/home/statistics_explained/includes/MediaWiki.php(307): MediaWiki\SpecialPage\SpecialPageFactory->executePath(Title, RequestContext)
#5 /ec/prod/app/webroot/home/statistics_explained/includes/MediaWiki.php(945): MediaWiki->performRequest()
#6 /ec/prod/app/webroot/home/statistics_explained/includes/MediaWiki.php(548): MediaWiki->main()
#7 /ec/prod/app/webroot/home/statistics_explained/index.php(89): MediaWiki->run()
#8 /ec/prod/app/webroot/home/statistics_explained/index.php(103): wfIndexMain()
#9 {main}