Could not find datasource Error 1615: Prepared statement needs to be re-prepared

Could not find datasource Error 1615: Prepared statement needs to be re-prepared
keep getting them after a certain amount of time.what is going on?
Is there some problem from my datasource or is it from your end?

You’ll have to include more information than that if you think you’ll get some response. For starters, what datasource? Does grafana server log include something interesting related to your problem?