Why do I get this error message?

If you’re seeing this Grafana has failed to load its application files

  1. This could be caused by your reverse proxy settings.

  2. If you host grafana under subpath make sure your grafana.ini root_url setting includes subpath

  3. If you have a local dev build make sure you build frontend using: npm run dev, npm run watch, or npm run build

  4. Sometimes restarting grafana-server can help

I used it well with the Docker.
When I restarted, the following message appeared.

Can you explain how you started Grafana and how you restarted Grafana? Are you using docker run or docker-compose?

That error message is usually only seen when developing Grafana. It means that the JavaScript files did not load.

Are you able to access the server logs using the docker logs command?