Inkscape mesh gradient results in black svg

I am a beginner with inkscape and svg graphics.
I created a knob that uses a mesh gradient.
It always show up as black svg on Juce.

When I switch to linear gradient, it shows up as expected.

Unfortunately, JUCE only supports a subset of SVG. For most non-trivial work (i.e. not basic shapes and solid/gradient fills) you’ll need to integrate checking how JUCE renders your file in the Projucer’s preview pane.