Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/commyhos/public_html/typo3a.com.myhost.id/t2/vendor/symfony/mailer/Event/MessageEvent.php:25 Stack trace: #0 {main} thrown in /home/commyhos/public_html/typo3a.com.myhost.id/t2/vendor/symfony/mailer/Event/MessageEvent.php on line 25