Github user yywwd commented on the issue: https://github.com/apache/zeppelin/pull/2231 @zjffdu NoSuchMethodError: org.apache.spark.ui.SparkUI.appUIAddress() My AWS cluster is EMR-5.14.0, Application: Ganglia 3.7.2, Spark 2.3.0, Zeppelin 0.7.3, Livy 0.4.0
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