Fatal error: Uncaught Error: Class "Symfony\Component\Debug\ExceptionHandler" not found in /var/www/apache/dev/cal/web/vendor/symfony/http-kernel/Debug/ExceptionHandler.php:25 Stack trace: #0 {main} thrown in /var/www/apache/dev/cal/web/vendor/symfony/http-kernel/Debug/ExceptionHandler.php on line 25