Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Event\PostResponseEvent' not found in /var/www/alldocs/home/rprather/TIWebsite/simplesamlphp_idp/vendor/symfony/http-kernel/Event/TerminateEvent.php:24 Stack trace: #0 {main} thrown in /var/www/alldocs/home/rprather/TIWebsite/simplesamlphp_idp/vendor/symfony/http-kernel/Event/TerminateEvent.php on line 24