Fatal error: Uncaught Error: Class "Hamcrest\AbstractMatcherTest" not found in /home/bimmertest/BookStack/vendor/hamcrest/hamcrest-php/tests/Hamcrest/Type/IsCallableTest.php:4 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/hamcrest/hamcrest-php/tests/Hamcrest/Type/IsCallableTest.php on line 4