Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/naimul2002a/public_html/system/client-php-master/lib/Swagger/Client/Tests/CallbackApiTest.php:50 Stack trace: #0 {main} thrown in /home/naimul2002a/public_html/system/client-php-master/lib/Swagger/Client/Tests/CallbackApiTest.php on line 50