Fatal error: Uncaught Error: Class "Symfony\Component\Form\FormEvent" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/symfony/form/Event/PostSubmitEvent.php:22 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/symfony/form/Event/PostSubmitEvent.php on line 22