Installed collectd with nethserver-cgp and the link page returns the cgp page without data, only the word ‘uncategorized’.
Removed nethserver-cgp and installed nethserver-collectd-web, that page returns with full data as expected.
I have installed both nethserver-cgp and nethserver-collectd-web and I can confirm what @fasttech says. Please find attached a screenshot. I have removed from the screenshot (red annotation) my hostname.
See “uncategorized” is normal
on the contrary this behaviour is odd