Fatal error: Uncaught Error: Interface 'Vonage\Voice\Endpoint\EndpointInterface' not found in C:\xampp\htdocs\kit\vendor\vonage\client-core\src\Voice\Endpoint\Phone.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\kit\vendor\vonage\client-core\src\Voice\Endpoint\Phone.php on line 16