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

[zjffdu]

Github user zjffdu commented on the issue:

    https://github.com/apache/zeppelin/pull/2634
  
    @jinxliu Actually you don't need to create another PR, for the next time 
you just need to rebase and force push


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