Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/websupportontdem/public_html/uscabinetonline.websupportondemo.com/old/vendor/magento/composer/tests/Composer/MagentoComposerApplicationTest.php:13 Stack trace: #0 {main} thrown in /home/websupportontdem/public_html/uscabinetonline.websupportondemo.com/old/vendor/magento/composer/tests/Composer/MagentoComposerApplicationTest.php on line 13