title: Kibana UI not loading on Linux
body: <p>I am running ES and Kibana 6.3.1 on Linux (RHEL 6.5, Santiago) with default configs.<br>
  ES comes up fine and I am able to hit localhost:9200 also.<br>
  Kibana server also comes up fine with following message:  </p>
  
  <pre><code>Server running at http://localhost:5601
  </code></pre>
  
  <p>But when I try to access Kibana GUI, it keeps on loading showing Kibana logo with Loading written on its right bottom side. I am using firefox browser.<br>
  Please let me know what can be the issue?
  Thanks.</p>