Fatal error: Uncaught Error: Class 'Hamcrest\BaseMatcher' not found in C:\xampp\htdocs\admin\vendor\hamcrest\hamcrest-php\tests\Hamcrest\BaseMatcherTest.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\hamcrest\hamcrest-php\tests\Hamcrest\BaseMatcherTest.php on line 5