Fatal error: Uncaught Error: Interface "Nexmo\Entity\JsonSerializableInterface" not found in /home/trombino/public_html/africa.trombino.org/vendor/nexmo/client-core/src/Account/Config.php:10
Stack trace:
#0 {main}
thrown in /home/trombino/public_html/africa.trombino.org/vendor/nexmo/client-core/src/Account/Config.php on line 10