Why can't I see utilization?

[ggue]

hello

I want to see the vm's utilization, but I can't check it with the following error

It doesn't always come out like this, but if you stop the server, you get the data normally.

Is this a bug?
Or is there a workaround?

[Fryguy]

Opened ManageIQ/manageiq-ui-classic#8709. @ggue we're going to need more information, but let's discuss over there.