diff --git a/app/admin/hdl/hdl_demo.go b/app/admin/hdl/hdl_demo.go
index 5f71885..830e103 100644
--- a/app/admin/hdl/hdl_demo.go
+++ b/app/admin/hdl/hdl_demo.go
@@ -155,7 +155,7 @@ func Demo(c *gin.Context) {
 	return
 
 	var req md.CentralKitchenForSchoolOrderRefundAuditReq
-	err := c.ShouldBindJSON(&req)
+	err = c.ShouldBindJSON(&req)
 	if err != nil {
 		err = validate.HandleValidateErr(err)
 		err1 := err.(e.E)