Github user Leemoonsoo commented on the issue:
https://github.com/apache/zeppelin/pull/2640
Thanks @kjmrknsn for the fix!
CI job 7.3 and 7.4 failed and looks like it's flaky test.
https://travis-ci.org/kjmrknsn/zeppelin/builds/295636412
Could you try re-run failed tests and see if they goes green?---
