Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpKernel\HttpKernelInterface' not found in /var/www/html/test-project/my-app/vendor/symfony/http-kernel/HttpKernel.php:51 Stack trace: #0 {main} thrown in /var/www/html/test-project/my-app/vendor/symfony/http-kernel/HttpKernel.php on line 51