Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /users/maximus/www/storage/vendor/guzzlehttp/ringphp/tests/Future/CompletedFutureArrayTest.php:6 Stack trace: #0 {main} thrown in /users/maximus/www/storage/vendor/guzzlehttp/ringphp/tests/Future/CompletedFutureArrayTest.php on line 6