Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Event\SchemaEventArgs' not found in C:\xampp\htdocs\reservation\vendor\doctrine\dbal\lib\Doctrine\DBAL\Event\SchemaColumnDefinitionEventArgs.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\reservation\vendor\doctrine\dbal\lib\Doctrine\DBAL\Event\SchemaColumnDefinitionEventArgs.php on line 13