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[8da448c3bf46034cdcf6e40f] /Special:Iframe Error from line 28 of /var/www/html/w/extensions/Iframe/SpecialIframe_body.php: Call to undefined method OutputPage::addWikiText()

Backtrace:

#0 /var/www/html/w/includes/specialpage/SpecialPage.php(575): SpecialIframe->execute(NULL)
#1 /var/www/html/w/includes/specialpage/SpecialPageFactory.php(611): SpecialPage->run(NULL)
#2 /var/www/html/w/includes/MediaWiki.php(296): MediaWiki\Special\SpecialPageFactory->executePath(Title, RequestContext)
#3 /var/www/html/w/includes/MediaWiki.php(900): MediaWiki->performRequest()
#4 /var/www/html/w/includes/MediaWiki.php(527): MediaWiki->main()
#5 /var/www/html/w/index.php(44): MediaWiki->run()
#6 {main}