Browser console error about missing favicon-active.user.ico

[set-soft]

I think the code should avoid the error.
In my case I solved it creating a symlink.
Errors in the console are distracting when trying to debug real errors.

[pythongosssss]

This would require an unnecessary amount of work to implement for 0 benefit, it's already doing a HEAD to check if the file exists. Your browser console is automatically logging all 404s which isn't something I can change.