Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/airtimer/public_html/vendor/ezimuel/ringphp/tests/Client/MockHandlerTest.php:8 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/ezimuel/ringphp/tests/Client/MockHandlerTest.php on line 8