Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpKernel\KernelInterface' not found in /home/kubalos2/public_html/testtestowy/vendor/symfony/http-kernel/Kernel.php:46 Stack trace: #0 {main} thrown in /home/kubalos2/public_html/testtestowy/vendor/symfony/http-kernel/Kernel.php on line 46