Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/devmindz/public_html/fedex_api/php/vendor/phpunit/phpunit-mock-objects/tests/GeneratorTest.php:28 Stack trace: #0 {main} thrown in /home/devmindz/public_html/fedex_api/php/vendor/phpunit/phpunit-mock-objects/tests/GeneratorTest.php on line 28