Fatal error: Uncaught Error: Interface 'Nexmo\Client\Request\RequestInterface' not found in /home/flexinettek/public_html/vendor/nexmo/client/src/Client/Request/AbstractRequest.php:11 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/nexmo/client/src/Client/Request/AbstractRequest.php on line 11