Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\HttpKernel' not found in /home/app/htdocs/lidia/vendor/symfony/http-kernel/Tests/HttpCache/TestMultipleHttpKernel.php:22 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/http-kernel/Tests/HttpCache/TestMultipleHttpKernel.php on line 22