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java.lang.NullPointerException: null at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)[na:1.8.0_65] at org.apache.curator.framework.imps.EnsembleTracker.processConfigData(EnsembleTracker.java:163)[curator-framework-3.0.0.jar:na] at org.apache.curator.framework.imps.EnsembleTracker.access$200(EnsembleTracker.java:48)[curator-framework-3.0.0.jar:na] at org.apache.curator.framework.imps.EnsembleTracker$2.processResult(EnsembleTracker.java:134)[curator-framework-3.0.0.jar:na] at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:829)[curator-framework-3.0.0.jar:na] at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:611)[curator-framework-3.0.0.jar:na] at org.apache.curator.framework.imps.WatcherRemovalFacade.processBackgroundOperation(WatcherRemovalFacade.java:151)[curator-framework-3.0.0.jar:na] at org.apache.curator.framework.imps.GetConfigBuilderImpl$2.processResult(GetConfigBuilderImpl.java:210)[curator-framework-3.0.0.jar:na] at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:619)[zookeeper-3.5.1-alpha.jar:3.5.1-alpha-1693007] at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:528)[zookeeper-3.5.1-alpha.jar:3.5.1-alpha-1693007]