Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\gen\ms_core\DiscordApi\vendor\ringcentral\psr7\tests\DroppingStreamTest.php:7 Stack trace: #0 {main} thrown in C:\gen\ms_core\DiscordApi\vendor\ringcentral\psr7\tests\DroppingStreamTest.php on line 7