Fatal error: Uncaught Error: Interface "Nexmo\Entity\JsonSerializableInterface" not found in C:\xampp\htdocs\OFFLINE\Uawa\laravel-version\laravel\vendor\nexmo\client\src\Account\Balance.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\OFFLINE\Uawa\laravel-version\laravel\vendor\nexmo\client\src\Account\Balance.php on line 10