Fatal error: Uncaught Error: Interface "Vonage\Voice\Endpoint\EndpointInterface" not found in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/vonage/client-core/src/Voice/Endpoint/Websocket.php:16 Stack trace: #0 {main} thrown in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/vonage/client-core/src/Voice/Endpoint/Websocket.php on line 16