Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/devmecseminars/public_html/mec/vendor/commerceguys/authnet/tests/ConfigurationTest.php:10 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/commerceguys/authnet/tests/ConfigurationTest.php on line 10