Fatal error: Uncaught Error: Interface "Vonage\Entity\JsonSerializableInterface" not found in /home/elysiumgroups/recruit.elysiumgroups.com/vendor/vonage/client-core/src/Account/Balance.php:29 Stack trace: #0 {main} thrown in /home/elysiumgroups/recruit.elysiumgroups.com/vendor/vonage/client-core/src/Account/Balance.php on line 29