Fatal error: Uncaught Error: Class 'Symfony\Component\EventDispatcher\Event' not found in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/security-http/Event/SwitchUserEvent.php:26 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/security-http/Event/SwitchUserEvent.php on line 26