Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/bimmertest/BookStack/vendor/ssddanbrown/asserthtml/tests/HelperTest.php:6 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/ssddanbrown/asserthtml/tests/HelperTest.php on line 6