Fatal error: Uncaught Error: Class "MediaWiki\Installer\Task\Task" not found in /home/floten1/q.tenbergen.ca/extensions/Echo/includes/InstallSchemaTask.php:16 Stack trace: #0 {main} thrown in /home/floten1/q.tenbergen.ca/extensions/Echo/includes/InstallSchemaTask.php on line 16