Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/trairtil/public_html/vendor/filp/whoops/tests/Whoops/Util/SystemFacadeTest.php:6 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/filp/whoops/tests/Whoops/Util/SystemFacadeTest.php on line 6