Failed to decode downloaded font

Looking at my site with the inspector, I noticed this error:
Failed to decode downloaded font: Backlight
Does this mean the font chosen, many years back, has never been used?

https://pideja.ca

Well, I see this in Safari:

Content blocker prevented frame displaying https://pideja.ca/ from loading a resource from https://hello.myfonts.net/count/3b0ce6

If I disable my content blockers on your site, I don’t actually see the difference, so I’m not sure where that font is actually being used.