Icons SVG not showing

Setup, Configuration and Use Beginners
1

Hi
I have a issue, i am sure that is something i do wrong.
i have an widget that i use with custom icons in config.
I see one icon when is ON the button, but when is off is not showing.

image
image898×748 49.7 KB

image
image1005×650 29.4 KB

image
image784×337 15.6 KB

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image1887×377 57.4 KB

What i did wrong?
icons are different one is with on and one with off…
Thank you for your time:)

2

house-on.svg ( this works ) vs. house_off.svg ( this does not work ) thus it most probably has to be named house-off.svg ( dash instead of underscore ).