Could not find datasource: database is locked

Grafana
,
1

What happened:
Some Alerts , Contact points and notification policies are desappeard and error message on some Alertes said that “could not find datasource: database is locked”
What you expected to happen:
get all alerts , contact points and notification policies that i have created before working without any error
How to reproduce it (as minimally and precisely as possible):
there is no scenario to reproduce the error , the error was appeared suddenly
Anything else we need to know?:
the grafana VM is on Azure , the Prometheus servers are on local datacenter
All graph are working fine but the problem is on the alerts , the contact points and the notification policies .
Environment:

  • Grafana version: Grafana v8.2.4 ([d409b0c)
  • Data source type & version: Prometheus
  • OS Grafana is installed on: Debian 11
  • User OS & Browser: Windows 10 - chrome
  • Grafana plugins:
  • Others: Grafana database is Sqlite
2

sounds like an error migrating the legacy alerts into new alerting platform. Were these old alerts? If so, might be best to rewrite them using the new platform

3

The alerts are created with new platform, they worked fine for a couple of monthes but suddenly they gives this error . i recreated some of them but i still have the same error .
it can’t be a problem of sqlite database ?? may be somthing wrong on the grafana.db sqlite database ??