Fatal error: Uncaught Error: Interface 'Ecpay\Sdk\Interfaces\Request\RequestInterface' not found in /home/beepass/public_html/STRUCTURE/ECPaySample/src/Request/CheckMacValueRequest.php:9 Stack trace: #0 {main} thrown in /home/beepass/public_html/STRUCTURE/ECPaySample/src/Request/CheckMacValueRequest.php on line 9