Github user astroshim commented on the issue: https://github.com/apache/zeppelin/pull/1369 @doanduyhai Sorry to keep you waiting. It works like a charm now but the error count number at the beginning of message appears a little strange like following screen shot. 
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---