Fatal error: Uncaught Error: Class "MediaWiki\Extension\Notifications\Formatters\EchoEventPresentationModel" not found in C:\xampp\htdocs\extensions\OATHAuth\src\Notifications\EnablePresentationModel.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\OATHAuth\src\Notifications\EnablePresentationModel.php on line 27