Fatal error: Uncaught Error: Class "MediaWiki\Deferred\DataUpdate" not found in /home/floten1/q.tenbergen.ca/extensions/Linter/includes/LintUpdate.php:32 Stack trace: #0 {main} thrown in /home/floten1/q.tenbergen.ca/extensions/Linter/includes/LintUpdate.php on line 32