There seems to be an extra empty channel that wasn't originally there

➜  ~ sudo nix-channel --list
" "

What is the " " here?

➜  ~ sudo nix-channel --update
error: unable to download '"': URL using bad/illegal format or missing URL (3)
➜  ~ sudo nixos-rebuild switch --upgrade
warning: Nix search path entry '/nix/var/nix/profiles/per-user/root/channels/nixos' does not exist, ignoring

It seems to be causing some problems such as channel updates, system updates.

Here’s the kicker: I can’t delete it.

Yep, see here:

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