ISPConfig doesn't show Munin results (Munin is working right)

I've installed ISPConfig, created a Site and after that installed and configured Munin to work with the newly created site. Then I configured that in ISPConfig > System > Server Config > mydomain.com > Munin URL > http://www.mydomain.com/munin

So, if I access www.mydomain.com/munin it shows the monitoring graphs. Nice.

But, if I go to ISPConfig > Monitoring > Show Munin, the ISPConfig panel shows just a line stating "Munin (Server : www.mydomain.com)" and a blank area.

Any ideas?

I'm using ISPConfig 3.0.5.3 in CentOS 6.5, both up-to-date.

 

I am seeing the same thing. Running Munin 2.0.6-4 and ISPConfig 3.

If I access Munin via http://www.mydomain.com/munin it shows the graphs and looks great.

But if I try to view it via the ISPConfig control panel it just says.

"Munin (Server : www.mydomain.com)" and a blank area.

Monit works, but I have to log-in and accept the certificate warning first.

Has anyone figured out how to fix?

 

Same here with ISPConfig 3.0.5.4p1 and Debian Wheezy. Link with username and password works if accessed directly, blank page through ISPconfig.

 

In fact, the solution if using Chrome consists in making click in the grey shield at the URL bar: