Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Kernel' not found in /home/cgenial/cgenial/vendor/knplabs/knp-snappy-bundle/Tests/TestKernel.php:8 Stack trace: #0 {main} thrown in /home/cgenial/cgenial/vendor/knplabs/knp-snappy-bundle/Tests/TestKernel.php on line 8