B4J Question loadfont detected no font

[jinyistudio]

Hi,
I running my ui app in debug mode in the raspberry PI. dsh7.ttf put in Files directory.
dsg7=fx.LoadFont(File.DirAssets,"dsg7.ttf",54)

it always give me exception:
Error: JavaFX detected no fonts! Please refer to release notes for proper font configuration

 

[Erel]

Does it only happen with this font? Maybe it is not compatible with RPi.