[GitHub] zeppelin issue #2634: [ZEPPELIN-3014] NPE bug fix and Error message enhancem...

[jinxliu]

Github user jinxliu commented on the issue:

    https://github.com/apache/zeppelin/pull/2634
  
    @zjffdu sure I will close this PR and have created another PR 
https://github.com/apache/zeppelin/pull/2645. Please review.


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