Fatal error: Uncaught Error: Class "Doctrine\DBAL\Exception\ConnectionException" not found in C:\xampp\htdocs\laravel-project111\vendor\doctrine\dbal\src\Exception\ConnectionLost.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laravel-project111\vendor\doctrine\dbal\src\Exception\ConnectionLost.php on line 7