Github user astroshim commented on the issue:
https://github.com/apache/zeppelin/pull/979
@corneadoug Thank you for your kind explanation.
I know the reason about the error but I couldn't reproduce the error even
if i build like ```mvn clean package```.
Did you build also like i did?
---
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.
---
