Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Event" not found in /home/dbdevweblamp/public_html/vendor/symfony/security-http/Event/SwitchUserEvent.php:26 Stack trace: #0 {main} thrown in /home/dbdevweblamp/public_html/vendor/symfony/security-http/Event/SwitchUserEvent.php on line 26