Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Kernel" not found in /home/flighto/e-commerce/vendor/payum/payum-bundle/Tests/Functional/app/AppKernel.php:13 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/payum/payum-bundle/Tests/Functional/app/AppKernel.php on line 13