I just noticed the old ones were loading font assets from my server,
but those fonts were already long gone.
On safe.fiery.me, I instead used my own builds of
BobbyWibowo/HttpErrorPages
so I never noticed the issues.
I only recently came to realize of this after realizing a bunch of
users getting temp-IP-banned from viewing error pages of other users of
this fork (since my server bans high amount of 404s).