Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/ilias/components/ILIAS/Refinery/tests/Integer/Constraints/LessThanConstraintTest.php:30 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Refinery/tests/Integer/Constraints/LessThanConstraintTest.php on line 30