I use OH3 for some weeks now and are pretty happy with how it works.
I defined some items and got analyze charts “for free” with it. Very nice charts without having to do anything for it. I used it to show the used energy during the day and week. But all of a sudden, no lines are showing on the chart anymore. The data is there, because when I select a point in time on the empty chart, it shows me the value belonging to that time. What has happened? Nothing from my side. I don’t want to reboot without first consulting the community. Maybe I need to gather info first to make it possible to find the issue by the experts.