Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/techtossco/projects.techtoss.co.uk/sc/vendor/symfony/mailer/Event/MessageEvent.php:25 Stack trace: #0 {main} thrown in /home/techtossco/projects.techtoss.co.uk/sc/vendor/symfony/mailer/Event/MessageEvent.php on line 25