Fatal error: Uncaught Error: Class "Vonage\Client\Credentials\AbstractCredentials" not found in C:\xampp\htdocs\hannoole\PMS\vendor\vonage\client-core\src\Client\Credentials\Container.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\PMS\vendor\vonage\client-core\src\Client\Credentials\Container.php on line 12