[WARN ][r.suppressed ] [localhost] path: /.kibana_task_manager%2C.kibana_task_manager_7.12.1, params: {ignore_unavailable=true, index=.kibana_task_manager,.kibana_task_manager_7.12.1} org.elasticsearch.discovery.MasterNotDiscoveredException: null at org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$2.onTimeout(TransportMasterNodeAction.java:219) [elasticsearch-7.12.1.jar:7.12.1] at org.elasticsearch.cluster.ClusterStateObserver$ContextPreservingListener.onTimeout(ClusterStateObserver.java:324) [elasticsearch-7.12.1.jar:7.12.1] at org.elasticsearch.cluster.ClusterStateObserver$ObserverClusterStateListener.onTimeout(ClusterStateObserver.java:241) [elasticsearch-7.12.1.jar:7.12.1] at org.elasticsearch.cluster.service.ClusterApplierService$NotifyTimeout.run(ClusterApplierService.java:590) [elasticsearch-7.12.1.jar:7.12.1] at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673) [elasticsearch-7.12.1.jar:7.12.1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_291] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_291] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_291]