Fatal error: Uncaught Error: Class 'Doctrine\Common\EventArgs' not found in E:\xampp\htdocs\www\order\qr250\vendor\doctrine\dbal\src\Event\SchemaEventArgs.php:12 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\order\qr250\vendor\doctrine\dbal\src\Event\SchemaEventArgs.php on line 12