Kibana does not showing any data

Hi all,

This error caused my data from showing in Kibana. Can anyone assist on this matter? FYI I am running on Elasticsearch 2.3.

org.elasticsearch.action.support.broadcast.TransportBroadcastAction$ShardTransportHandler.messageReceived(TransportBroadcastAction.java:278)
May 23 13:01:48 localhost elasticsearch: at org.elasticsearch.transport.RequestHandlerRegistry.processMessageReceived(RequestHandlerRegistry.java:75)
May 23 13:01:48 localhost elasticsearch: at org.elasticsearch.transport.TransportService$4.doRun(TransportService.java:376)
May 23 13:01:48 localhost elasticsearch: at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
May 23 13:01:48 localhost elasticsearch: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
May 23 13:01:48 localhost elasticsearch: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
May 23 13:01:48 localhost elasticsearch: at java.lang.Thread.run(Thread.java:745)

Where is that error from exactly?

the error comes out whenever i enter the tail /var/log/messages (on the terminal) and the error below showing:

May 24 09:14:13 localhost elasticsearch: at org.elasticsearch.action.fieldstats.TransportFieldStatsTransportAction.shardOperation(TransportFieldStatsTransportAction.java:54)
May 24 09:14:13 localhost elasticsearch: at org.elasticsearch.action.support.broadcast.TransportBroadcastAction$ShardTransportHandler.messageReceived(TransportBroadcastAction.java:282)
May 24 09:14:13 localhost elasticsearch: at org.elasticsearch.action.support.broadcast.TransportBroadcastAction$ShardTransportHandler.messageReceived(TransportBroadcastAction.java:278)
May 24 09:14:13 localhost elasticsearch: at org.elasticsearch.transport.RequestHandlerRegistry.processMessageReceived(RequestHandlerRegistry.java:75)
May 24 09:14:13 localhost elasticsearch: at org.elasticsearch.transport.TransportService$4.doRun(TransportService.java:376)
May 24 09:14:13 localhost elasticsearch: at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
May 24 09:14:13 localhost elasticsearch: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
May 24 09:14:13 localhost elasticsearch: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
May 24 09:14:13 localhost elasticsearch: at java.lang.Thread.run(Thread.java:745)

At some point, when the browser is being refresh, the data will come out again. Is it caused by bugs?