Errors with Elasticsearch

When I open Kibana when I type my IP into the address bar, I get the
following 2 errors at the top of the page. Would you happen to have any
advice on how to fix these errors? I have upgraded my version of
Elasticsearch a few times but I still get these errors...

  • Upgrade Required: Your version of Elasticsearch is too old. Kibana
    requires Elasticsearch 0.90.9 or above.

  • Error Could not reach http://10.236.134.87:9200/_nodes. If you are using
    a proxy, ensure it is configured correctly

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