Fatal error: Uncaught Error: Class "Nexmo\Client\Credentials\AbstractCredentials" not found in /home/rpios/demo-stat.cymdev.com/vendor/nexmo/client/src/Client/Credentials/SignatureSecret.php:11 Stack trace: #0 {main} thrown in /home/rpios/demo-stat.cymdev.com/vendor/nexmo/client/src/Client/Credentials/SignatureSecret.php on line 11