Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Kernel' not found in /var/www/html/autocar/vendor/symfony/framework-bundle/Tests/Command/CacheClearCommand/Fixture/TestAppKernel.php:20 Stack trace: #0 {main} thrown in /var/www/html/autocar/vendor/symfony/framework-bundle/Tests/Command/CacheClearCommand/Fixture/TestAppKernel.php on line 20