Fatal error: Uncaught Error: Class 'Nexmo\Message\Message' not found in /opt/lampp/htdocs/kuesioner/vendor/nexmo/client-core/src/Message/Text.php:14 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/nexmo/client-core/src/Message/Text.php on line 14