Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /var/www/html/lib/Ratchet/tests/helpers/Ratchet/AbstractMessageComponentTestCase.php:4 Stack trace: #0 {main} thrown in /var/www/html/lib/Ratchet/tests/helpers/Ratchet/AbstractMessageComponentTestCase.php on line 4