Failed to fetch tor+https://deb.loki.network/dists/bookworm/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 401E790E060BB00E

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Unrelated to EXPKEYSIG - Error GPG key Whonix.

That is the issue.

Unspecific to Whonix.

Can be resolved as per:

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