Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\xampp\htdocs\mflux\vendor\wisembly\elephant.io\test\ClientTest.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\mflux\vendor\wisembly\elephant.io\test\ClientTest.php on line 7