Fatal error: Could not check compatibility between UserMergeHooks::onContributionsToolLinks($id, Title $nt, array &$tools, SpecialPage $sp) and MediaWiki\Hook\ContributionsToolLinksHook::onContributionsToolLinks($id, MediaWiki\Title\Title $title, array &$tools, MediaWiki\SpecialPage\SpecialPage $specialPage), because class Title is not available in /var/www/vhosts/habboxwiki.com/httpdocs/wiki/extensions/UserMerge/includes/UserMergeHooks.php on line 35