Fatal error: Uncaught Error: Interface 'Ratchet\RFC6455\Messaging\MessageInterface' not found in /home/saelmobile/whatsapp.saelmobile.com/vendor/ratchet/rfc6455/src/Messaging/Message.php:4 Stack trace: #0 {main} thrown in /home/saelmobile/whatsapp.saelmobile.com/vendor/ratchet/rfc6455/src/Messaging/Message.php on line 4