Hi,
we are planning to upgrade our Jira instance from 4.0.2 to 5.1.7 (big step). So far eveything went well in my test environment. But one thing is bugging me and I can't find any solution for it.
The "Time to First Response" chart is empty. I have recreated the portlet/gadget, tried it on different project but no luck.

Any solutions for this?
Kind regards
Thomas