Fatal error: Uncaught Error: Interface "Ratchet\ComponentInterface" not found in /var/www/html/lib/Ratchet/src/Ratchet/Wamp/WampServerInterface.php:10 Stack trace: #0 {main} thrown in /var/www/html/lib/Ratchet/src/Ratchet/Wamp/WampServerInterface.php on line 10