Grafana include local img files into Dashboard [SOLVED]

i have searched the web for 2 days now and no solution works for me.
HA is installed on a NUC with grafana as a plugin. i can not include images into the text panel if my source is local.
Only images that are comming from an exteral source work.

i have tried:
/www/test/
/congif/www/test/
/usr/share/grafana/public/img
and many more …