Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpFoundation\Exception\RequestExceptionInterface' not found in /home/soh-works/www/websoket-sample/vendor/symfony/http-foundation/Exception/BadRequestException.php:17 Stack trace: #0 {main} thrown in /home/soh-works/www/websoket-sample/vendor/symfony/http-foundation/Exception/BadRequestException.php on line 17