Fatal error: Uncaught Error: Class 'Hamcrest\AbstractMatcherTest' not found in D:\xampp\htdocs\psp\backend\vendor\hamcrest\hamcrest-php\tests\Hamcrest\Array\IsArrayWithSizeTest.php:6 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\hamcrest\hamcrest-php\tests\Hamcrest\Array\IsArrayWithSizeTest.php on line 6