Fatal error: Uncaught Error: Interface "Amazon\Payment\Helper\Shortcut\ValidatorInterface" not found in /home/airtimer/public_html/vendor/amzn/amazon-pay-module/Helper/Shortcut/Validator.php:29 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/amzn/amazon-pay-module/Helper/Shortcut/Validator.php on line 29