Grafana in Chromium Browser (Raspi) in IO-Broker-VIS Widget

Chromium:

  • Browse to myIP.200:8083 (…200 is a Raspi server with IO-Broker-VIS).

  • In the IO-Broker-VIS view there is a widget with a link to Grafana on another server:
    myIP.195:3000/d/99openWB001/openwb-mit-steuerung?orgId=1&refresh=10s%2F&kiosk

  • Means: The Grafana dashboard is named “openwb-mit-steuerung” and the parameters are “?orgId=1&refresh=10s”.

  • And it should show the dashboard in a kiosk mode.

This leads to an error:
Obviously Grafana is loading and then tells me…
"If you’re seeing this Grafana has failed to load its application files

  1. This could be caused by your reverse proxy setting.
  2. If you host grafana under subpatch make sure your grafana.ini root_url setting includes subpath
  3. If you have a local dev build make sure you build frontend using: yarn start, yarn start:hot, or yarn build
  4. Sometimes restarting grafana-server can help"

BUT the astonishing thing is: In Firefox on the same machine it works fine! On any other PC in the network with browsers like Firefox, Safari et.al it works fine, too.

So why is Chromium not able to show this?

Pls, any advice is very welcome.