Re: Problems with apt in a clean stretch install.
> W: GPG error: http://deb.debian.org/debian stretch Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010 NO_PUBKEY CBF8D6FD518E17E1 NO_PUBKEY EF0F382A1A7B6500
> W: The repository 'http://deb.debian.org/debian stretch Release' is not signed.
> N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
> N: See apt-secure(8) manpage for repository creation and user configuration details.
> E: Failed to fetch http://deb.debian.org/debian/dists/stretch/updates/main/source/Sources 404 Not Found [IP: 220.127.116.11 80]
> E: Some index files failed to download. They have been ignored, or old ones used instead.