Fatal error: Uncaught Error: Interface "Mailgun\Model\ApiResponse" not found in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/mailgun/mailgun-php/src/Mailgun/Model/Domain/CreateCredentialResponse.php:17 Stack trace: #0 {main} thrown in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/mailgun/mailgun-php/src/Mailgun/Model/Domain/CreateCredentialResponse.php on line 17