Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/khademni/public_html/vendor/anlutro/l4-settings/tests/functional/AbstractFunctionalTest.php:8 Stack trace: #0 {main} thrown in /home/khademni/public_html/vendor/anlutro/l4-settings/tests/functional/AbstractFunctionalTest.php on line 8