Limitation of Grafana Alert

Hii Everyone

I am facing unauthorized error every 5 to 10 min automatically logout the Grafana session .Can you help me to solve this error. I hope you are understand what Can I say.
I have worded 200 VM in Grafana dashboard .
I have configure 500 alerting rule. I think this is alert problem. I am tell you or anything else error . Can I say right suggestion ASAP.

Please help me anyone .

Context:

  • Grafana v9.1.6
  • Data Source: Prometheus