Habmin2 chart doesn't look right

I’m moving from OH1 to OH2, and one important thing for me is the habmin charting. But this doesn’t look like correct from any perspective. Any idea?

I got the same thing and not a clue how to fix it
This is what i see with the corresponding data set.

Temperatuur_hoofd_aan-af-voer.pdf (182.6 KB)

I have the same, using mysql db. also can not save bar type…