Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Tests\Exception\HttpExceptionTest" not found in E:\xampp\htdocs\key1\vendor\symfony\http-kernel\Tests\Exception\ServiceUnavailableHttpExceptionTest.php:7 Stack trace: #0 {main} thrown in E:\xampp\htdocs\key1\vendor\symfony\http-kernel\Tests\Exception\ServiceUnavailableHttpExceptionTest.php on line 7