Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/digitalm/public_html/php/vendor/guzzlehttp/guzzle/tests/Subscriber/MockTest.php:19 Stack trace: #0 {main} thrown in /home/digitalm/public_html/php/vendor/guzzlehttp/guzzle/tests/Subscriber/MockTest.php on line 19