Fatal error: Uncaught Error: Class 'Hamcrest\AbstractMatcherTest' not found in C:\xampp73\htdocs\web\vendor\hamcrest\hamcrest-php\tests\Hamcrest\Array\IsArrayTest.php:6 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\web\vendor\hamcrest\hamcrest-php\tests\Hamcrest\Array\IsArrayTest.php on line 6