Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/devmindz/public_html/fedex_api/php/tests/FedEx/Tests/TestCase.php:8 Stack trace: #0 {main} thrown in /home/devmindz/public_html/fedex_api/php/tests/FedEx/Tests/TestCase.php on line 8