diff --git a/src/modules/sign/sign.controller.js b/src/modules/sign/sign.controller.js
index e0391d4..66f1584 100644
--- a/src/modules/sign/sign.controller.js
+++ b/src/modules/sign/sign.controller.js
@@ -93,9 +93,10 @@ module.exports = {
                     });
                 })
                 .catch(err => {
+                    mylog.error(err);
                     res.json({
                         code: 3,
-                        msg: err,
+                        msg: JSON.stringify(err),
                     });
                 });
             } else {