Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\HttpKernel" not found in C:\xampp\htdocs\r10ca\vendor\symfony\http-kernel\Tests\HttpCache\TestMultipleHttpKernel.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10ca\vendor\symfony\http-kernel\Tests\HttpCache\TestMultipleHttpKernel.php on line 22