Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in E:\phpProject\TEST\fr_epr\fr_epr_reg\vendor\symfony\mailer\Event\MessageEvent.php:25 Stack trace: #0 {main} thrown in E:\phpProject\TEST\fr_epr\fr_epr_reg\vendor\symfony\mailer\Event\MessageEvent.php on line 25