Hello
I have a button setup in my flow and I would like to customize the icon.
My node red home dir is /home/foo/.node-red/images
My httpStatic in settings.js is set to httpStatic: '/home/foo/.node-red/',
The image is called light_logo.jpg
However when I enter this into the configuration as follows:

The logo shows up as a question mark:

Can anyone shed any light on what I'm doing wrong?