Fatal error: Uncaught Error: Class 'Vonage\Client\Credentials\AbstractCredentials' not found in /home/clademy/lms.clademy.com/vendor/vonage/client-core/src/Client/Credentials/OAuth.php:23 Stack trace: #0 {main} thrown in /home/clademy/lms.clademy.com/vendor/vonage/client-core/src/Client/Credentials/OAuth.php on line 23