IFrame in Grafana

i want to embed a website in a panel in grafana.
however, the error appears that
“XXX.XX.XX.XX refused to connect”

I have configured the custom.ini or grafana.ini files by doing set:
allow_embedding = true
[auth. anonymous]
#enable anonymous access
enabled = true
disable_sanitize_html = true

is there any other solution for this problem?

Try to open the link in another browser window. You may be prompted with security requests. Accept them and then see if you can open the page. Once you can, go back to your iframe display and refresh.