Fatal error: Uncaught Error: Class "Symfony\Component\Notifier\Exception\InvalidArgumentException" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\notifier\Exception\IncompleteDsnException.php:17 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\notifier\Exception\IncompleteDsnException.php on line 17