No such index while adding elaticsearch datasource in grafana

Hello Everyone,
i am new to elasticsearch and grafana, i have installed grafana and elastic search on the same server
but while adding datasource of elasticsearch on grafana using elasticsearch plugin, there is a section for elasticsearch details, it says no such index found. please provide an adequate information so that i can add elsaticsearch into grafana.

Thanks

I have no experience using Grafana, but would recommend that you check if you have any data in Elasticsearch, e.g. through the cat indices API.