Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpKernel\KernelInterface' not found in /home/nusevaghici/public_html/demo/vendor/symfony/http-kernel/Kernel.php:51 Stack trace: #0 {main} thrown in /home/nusevaghici/public_html/demo/vendor/symfony/http-kernel/Kernel.php on line 51