Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpFoundation\Session\SessionInterface' not found in /home/devmecseminars/public_html/mec/vendor/symfony/http-foundation/Session/Session.php:30 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/http-foundation/Session/Session.php on line 30