OH3.2 display grafana graph in openhab

I configured a grafana with influxdb and i’ve a designed a graph.
So far so good.

But now I want to display this graph in openhab. So at first I used the share function within Grafana:

Afterwards i created a page with a webfram and I inserted a webframe with the URL of the graph.

But openhab doesn’t load the graph.