Kibana 4.5 status red: unable to connect to elasticsearch

Elastic Stack Elasticsearch
41

ELK work properly but now i want to install kibana plugin.
i follow GITHUB site procedure but it create error.
please refer the correct procedure.

42

Which plugin? Which procedure? What error?

43

i install
git clone https://github.com/JuanCarniglia/kbn_circles_vis.git
cd kbn_circles_vis
npm install
npm run build
cp -R build/kbn_circles_vis/ KIBANA_HOME/installedPlugins

i just copy kbn_circles_vis to installedplugins directory.but then kibana output would not display.

44

please reply . new plugin install in installedplugins dir or in src/plugins?

i install plugin in installedplugins dir and restart kibana. in kibana status that plugin status is ready but in visualization it could not display.
what should i do?