Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Kernel" not found in /home/flighto/e-commerce/vendor/sylius/paypal-plugin/tests/Application/Kernel.php:16 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/paypal-plugin/tests/Application/Kernel.php on line 16