Github user rouckas commented on the issue: https://github.com/apache/zeppelin/pull/2231 I was also running into this issue with Zeppelin 0.7.3, Livy 0.5.0 (0.4.0), and Spark 2.3.0 (or 2.2.1). The only solution I found was to downgrade to Zeppelin 0.6.2.
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