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addons/epay/library/Yansongda/Pay/Gateways/Alipay/Alipay.php

@@ -15,7 +15,7 @@ abstract class Alipay implements GatewayInterface
     /**
      * @var string
      */
-    protected $gateway = 'https://openapi.alipay.com/gateway.do?charset=UTF-8';
+    protected $gateway = 'https://openapi.alipaydev.com/gateway.do?charset=UTF-8';
 
     /**
      * alipay global config params.