Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpFoundation\Session\Storage\SessionStorageFactoryInterface' not found in /home/soh-works/www/websoket-sample/vendor/symfony/http-foundation/Session/Storage/ServiceSessionFactory.php:21 Stack trace: #0 {main} thrown in /home/soh-works/www/websoket-sample/vendor/symfony/http-foundation/Session/Storage/ServiceSessionFactory.php on line 21