Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\OSPanel\domains\resursm.gn\work\vendor\symfony\http-foundation\Tests\ResponseHeaderBagTest.php:21 Stack trace: #0 {main} thrown in C:\OSPanel\domains\resursm.gn\work\vendor\symfony\http-foundation\Tests\ResponseHeaderBagTest.php on line 21