Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/alkhalaffamily/public_html/trial_benaee/vendor/sebastian/exporter/tests/ExporterTest.php:18 Stack trace: #0 {main} thrown in /home/alkhalaffamily/public_html/trial_benaee/vendor/sebastian/exporter/tests/ExporterTest.php on line 18