Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Kernel" not found in /home/flighto/e-commerce/vendor/sylius/theme-bundle/tests/Application/Kernel.php:19 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/theme-bundle/tests/Application/Kernel.php on line 19