Fatal error: Uncaught Error: Class 'Hamcrest\FeatureMatcher' not found in C:\xampp\htdocs\admin\vendor\hamcrest\hamcrest-php\tests\Hamcrest\FeatureMatcherTest.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\hamcrest\hamcrest-php\tests\Hamcrest\FeatureMatcherTest.php on line 18