Kibana Discover: unknown error

I'm useing ELK fllow
-filebeat-1.2.3-1.x86_64
-logstash-2.3.4-1.noarch
-kibana-4.5.4-1.x86_64

When discover in kibana- tab is chosen, "Discover: unknown error" is indicated.
It's as follows whether it's detailed information of Discover: unknown error.
[error more info]
Error: unknown error
ErrorAbstract@http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64853:29
Generic@http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64899:22
respond@http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:66222:34
checkRespForFailure@http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:66183:15
http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64801:10
processQueue@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:41883:31
http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:41899:40
$eval@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:43127:29
$digest@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:42938:37
$apply@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:43235:32
done@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37684:54
completeRequest@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37882:16
requestError@http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37833:25

When how doing make this error, can it be settled?

Are there any errors in your elasticsearch logs? If you open up the network tab of your browser's devtools, do you see any error responses?

thanks for your advice

Following error is recorded in /var/log/kibana.stdout many times.

{"type":"log","@timestamp":"2016-08-19T01:54:47+00:00","tags":["warning","elasticsearch"],"pid":22181,"message":"Unable to revive connection: http://10.10.11.36:9200/"}
{"type":"log","@timestamp":"2016-08-19T01:54:47+00:00","tags":["warning","elasticsearch"],"pid":22181,"message":"No living connections"}
{"type":"response","@timestamp":"2016-08-19T01:54:47+00:00","tags":[],"pid":22181,"method":"post","statusCode":502,"req":{"url":"/elasticsearch/logstash-/_field_stats?level=indices","method":"post","headers":{"host":"10.10.11.64:5601","user-agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0","accept":"application/json, text/plain, /","accept-language":"ja,en-US;q=0.7,en;q=0.3","accept-encoding":"gzip, deflate","content-type":"application/json;charset=utf-8","kbn-version":"4.5.4","referer":"http://10.10.11.64:5601/app/kibana","content-length":"178","connection":"keep-alive"},"remoteAddress":"192.168.200.41","userAgent":"192.168.200.41","referer":"http://10.10.11.64:5601/app/kibana"},"res":{"statusCode":502,"responseTime":3,"contentLength":9},"message":"POST /elasticsearch/logstash-/_field_stats?level=indices 502 3ms - 9.0B"}

It looks like your Elasticsearch instance may be down or inaccessible from the host Kibana is running on.

thanks for your advice

my elasticsearch already is running
And Kibana host connect my elasticserch cluster

Why does this error appear on a screen of kinaba?

These lines indicate that Kibana probably isn't actually connected to Elasticsearch:

["warning","elasticsearch"],"pid":22181,"message":"Unable to revive connection: http://10.10.11.36:9200/"}
{"type":"log","@timestamp":"2016-08-19T01:54:47+00:00","tags":["warning","elasticsearch"],"pid":22181,"message":"No living connections"}

What does the Kibana status page look like? (Settings -> Status)