Request error happening very often using Elastisearch datasource

Hi Team,

Am using Grafana version 5.2.3 very getting Request error continuously when i load Dashboard. Each dashboard contains 4-5 panels. Back end connected to Elasticsearch attached error screens please suggest whats wrong happening from my side. Please help me to solve issue.

Thanks,
Veera

What is the error message on an individual panel (float over the orange corner bang - “!”)?