Fatal error: Uncaught Error: Class "Vonage\Client\Credentials\Handler\AbstractHandler" not found in /var/www/html/twilio.buxo.ca/vendor/vonage/client-core/src/Client/Credentials/Handler/SimSwapGnpHandler.php:14 Stack trace: #0 {main} thrown in /var/www/html/twilio.buxo.ca/vendor/vonage/client-core/src/Client/Credentials/Handler/SimSwapGnpHandler.php on line 14