Rrd4j Graphs not working

[rossko57]

Rather like this business

[SOLVED] [rrd4j] Chart is not working

Sorry for reviving this old thread, but I just stumbled upon the same issue and managed to solve it without installing Grafana. As I came up at this thread, I want to share my solution for future users experiencing the same problem. The problem is simply a missing font package. Simply installing sudo apt install libfontconfig1 did it for me. After a restart of the openhab2 service the graphs are now working for me. Greetings, Level147

If it is different symptom of same cause, different due to habpanel charts rather than sitemap charts, the openhabian fix is in

Install "sudo apt install fontconfig " package