Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/app/htdocs/message_gateway/vendor/sebastian/object-enumerator/tests/EnumeratorTest.php:18 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/sebastian/object-enumerator/tests/EnumeratorTest.php on line 18