Nixos channel 24.11 was broken

Yesterday i couldnt run nixos-rebuild without error. I could identify it back to to 24.11 channel (After switching back to 24.05 it worked again)

the errors were also really strange

error: … while calling the 'head' builtin at /nix/var/nix/profiles/per-user/root/channels/nixos/lib/attrsets.nix:1:35879: … while evaluating the attribute 'value' at /nix/var/nix/profiles/per-user/root/channels/nixos/lib/modules.nix:1:35088:

Today it works again. Does anyone know what happened?

Next time it happens, please provide the full error.

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