Fatal error: Uncaught Error: Interface "SendinBlue\Client\Model\ModelInterface" not found in /home/emaillis/emailapi.emaillistus.com/vendor/sendinblue/api-v3-sdk/lib/Model/MasterDetailsResponseBillingInfo.php:44 Stack trace: #0 {main} thrown in /home/emaillis/emailapi.emaillistus.com/vendor/sendinblue/api-v3-sdk/lib/Model/MasterDetailsResponseBillingInfo.php on line 44