Custom circle gauge image invisible in OBS Browser

Hello, I'm experiencing some issue with custom images in OBS mode.

https://imgur.com/4yNKMsY

As the image shown above, I set the circle gauge with custom gradient image, and everything works fine in work area and preview window.

Once I save and open it via OBS mode (google chrome, safari) the circle gauge image never show.  (as the picture below. )

https://imgur.com/0CpGGyx

Any idea to fix this? thank in advance!