Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /var/www/html/includes/google/vendor/guzzlehttp/guzzle/tests/IntegrationTest.php:13 Stack trace: #0 {main} thrown in /var/www/html/includes/google/vendor/guzzlehttp/guzzle/tests/IntegrationTest.php on line 13