Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Connection' not found in E:\xampp\htdocs\www\qr251\vendor\doctrine\dbal\src\Connections\PrimaryReadReplicaConnection.php:78 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\qr251\vendor\doctrine\dbal\src\Connections\PrimaryReadReplicaConnection.php on line 78