java.lang.NullPointerException: null

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java.lang.NullPointerException: null
at java.io.ByteArrayInputStream.(ByteArrayInputStream.java:106)
at org.apache.curator.framework.imps.EnsembleTracker.processConfigData(EnsembleTracker.java:163)
at org.apache.curator.framework.imps.EnsembleTracker.access$200(EnsembleTracker.java:48)
at org.apache.curator.framework.imps.EnsembleTracker$2.processResult(EnsembleTracker.java:134)
at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:829)
at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:611)
at org.apache.curator.framework.imps.WatcherRemovalFacade.processBackgroundOperation(WatcherRemovalFacade.java:151)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:619)

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