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org.elasticsearch.discovery.MasterNotDiscoveredException: waited for [30s]	at org.elasticsearch.action.support.master.TransportMasterNodeOperationAction$3.onTimeout(org/elasticsearch/action/support/master/TransportMasterNodeOperationAction.java:180)	at org.elasticsearch.cluster.service.InternalClusterService$NotifyTimeout.run(org/elasticsearch/cluster/service/InternalClusterService.java:491)	at java.util.concurrent.ThreadPoolExecutor.runWorker(java/util/concurrent/ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(java/util/concurrent/ThreadPoolExecutor.java:615)	at java.lang.Thread.run(java/lang/Thread.java:744)