Can't access Grafana running on windows 10 from a Raspberry Pi with Chromium browser

Hi

I have Grafana server running on a windows 10 machine. Grafana visualizes data from a MS SQL database. It works like a dream. Almost…
I have access to grafana from various machines running a broad variety of operating systems (windows & Linux) and browsers.

But when i try to access the site from a Raspberry pi running a chromium browser i get nothing. As in the login page is not even shown. What could be wrong?

I have tried to install grafana on another Pi, that server is accessible from my troubled “viewer Pi”

BR
Henrik Nyholt