Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Tests\HttpCache\HttpCacheTestCase" not found in E:\xampp\htdocs\key1\vendor\symfony\http-kernel\Tests\HttpCache\HttpCacheTest.php:24 Stack trace: #0 {main} thrown in E:\xampp\htdocs\key1\vendor\symfony\http-kernel\Tests\HttpCache\HttpCacheTest.php on line 24