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[d2a64f65378a8b970d29ae02] /wiki/Knightmare Error from line 108 of /var/www/html/extensions/OpenGraphMeta/OpenGraphMeta.class.php: Cannot use object of type DOMElement as array

Backtrace:

#0 /var/www/html/includes/Hooks.php(177): OpenGraphMeta::onOutputPageParserOutput(OutputPage, ParserOutput)
#1 /var/www/html/includes/Hooks.php(205): Hooks::callHook(string, array, array, NULL)
#2 /var/www/html/includes/OutputPage.php(1855): Hooks::run(string, array)
#3 /var/www/html/includes/OutputPage.php(1903): OutputPage->addParserOutputMetadata(ParserOutput)
#4 /var/www/html/includes/page/Article.php(600): OutputPage->addParserOutput(ParserOutput)
#5 /var/www/html/includes/actions/ViewAction.php(68): Article->view()
#6 /var/www/html/includes/MediaWiki.php(499): ViewAction->show()
#7 /var/www/html/includes/MediaWiki.php(293): MediaWiki->performAction(Article, Title)
#8 /var/www/html/includes/MediaWiki.php(851): MediaWiki->performRequest()
#9 /var/www/html/includes/MediaWiki.php(523): MediaWiki->main()
#10 /var/www/html/index.php(43): MediaWiki->run()
#11 {main}