Not getting logs in Kibana

Hi Team,
We are not getting near real time production logs in Kibana UI.Please find the attached screenshot and below mentioned ELK Version.


filebeat-6.2.4
Logstash-5.6.4
Elasticsearch-5.6.4
Kibana-5.6.4
We have restarted all the logstash,filebeat,Elasticsearch processes.There is no change after that also.Even There is no proper error log available under ELK logs.Can anyone help me to resolve this?

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