Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Schema\AbstractAsset' not found in E:\xampp\htdocs\www\qr250\vendor\doctrine\dbal\src\Schema\Index.php:16 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\qr250\vendor\doctrine\dbal\src\Schema\Index.php on line 16