Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\Tests\ResponseTestCase" not found in C:\Apache24_x64\htdocs\vak_old\vendor\symfony\http-foundation\Tests\ResponseTest.php:20 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\vak_old\vendor\symfony\http-foundation\Tests\ResponseTest.php on line 20