Github user AlexanderShoshin commented on the issue:
https://github.com/apache/zeppelin/pull/1758
@tae-jun, I found that **ZeppelinHub** can't display new notebooks
correctly. It is because the note.json structure was changed after
[ZEPPELIN-212](https://issues.apache.org/jira/browse/ZEPPELIN-212) was merged
(two weeks ago). Now notebook has a `results` attribute (instead of `result`)
to store paragraph results and it seems that **ZeppelinHub** can't see it.
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