Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/devmindz/public_html/fedex_api/php/vendor/symfony/yaml/Tests/DumperTest.php:18 Stack trace: #0 {main} thrown in /home/devmindz/public_html/fedex_api/php/vendor/symfony/yaml/Tests/DumperTest.php on line 18