Fatal error: Uncaught Error: Class 'Doctrine\Common\EventArgs' not found in C:\xampp\htdocs\reservation\vendor\doctrine\dbal\lib\Doctrine\DBAL\Event\ConnectionEventArgs.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\reservation\vendor\doctrine\dbal\lib\Doctrine\DBAL\Event\ConnectionEventArgs.php on line 15