Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Exception\HttpException' not found in /home/app/htdocs/message_gateway_20231016/vendor/symfony/http-kernel/Exception/ConflictHttpException.php:17 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway_20231016/vendor/symfony/http-kernel/Exception/ConflictHttpException.php on line 17