Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\SiramahClone\vendor\hamcrest\hamcrest-php\tests\Hamcrest\UtilTest.php:6 Stack trace: #0 {main} thrown in C:\xampp\htdocs\SiramahClone\vendor\hamcrest\hamcrest-php\tests\Hamcrest\UtilTest.php on line 6