fix

@@ -27,7 +27,7 @@ module.exports = class extends global.yoho.BaseModel {
         return this._checkUniverse(captcha)
             .catch(() => this.api.check(id, captcha))
             .then((result) => {
-                logger.info(`app.verified.graphic [${captcha}] result: `, result);
+                logger.info(`app.verified.graphic [${captcha}] result: `, JSON.stringify(result));
                 return result;
             })
             .then((result) => {
@@ -52,6 +52,4 @@ module.exports = class extends global.yoho.BaseModel {
                 }
             });
     }
-
-
 };