Fatal error: Uncaught Error: Class "Ratchet\AbstractConnectionDecorator" not found in /var/www/html/lib/Ratchet/tests/helpers/Ratchet/Mock/ConnectionDecorator.php:5 Stack trace: #0 {main} thrown in /var/www/html/lib/Ratchet/tests/helpers/Ratchet/Mock/ConnectionDecorator.php on line 5