Fatal error: Uncaught Error: Class 'Hamcrest\AbstractMatcherTest' not found in /var/www/development/pixtask/vendor/hamcrest/hamcrest-php/tests/Hamcrest/Core/HasToStringTest.php:33 Stack trace: #0 {main} thrown in /var/www/development/pixtask/vendor/hamcrest/hamcrest-php/tests/Hamcrest/Core/HasToStringTest.php on line 33