No data rrd4j in habmin

Dear all,
I’m struggling with habmin and my rrd4j data so i can plot a graph.
The strange thing, it is working in habpanel. Habpanel is reading the files and plot 2 graphs.
To get this work, I created a file manually in “/etc/openhab2/persistence/rrd4j.persist” and install the addon rrd4j.
At the graph you can see the online status from the mobile phones which are connected.
Is there someone can help me to get this also work in habmin.
In the pic. below you can see there is no data log in habmin

For the imagination a pic from habpanel