No graphics in Openvpn roadwarrior

Hi to everybody.

After the last upgrade i see an error if i go to in OpenVPN: Roadwarrior Statistics

how i can resolve this issue?

Thanks
Donatello

See https://community.ipfire.org/t/openvpn-roadwarrior-statistik, bug is getting fixed.

Thanks a lot
Have a nice day

Donatello