Hello, under Debian 12 (bookworm), when I run an update using the command: “sudo apt update,” I get the following error message:
Get:1 http://security.debian.org/debian-security bookworm-security InRelease [48.0 kB]
Hit:2 http://deb.anydesk.com all InRelease
Hit:3 https://download.docker.com/linux/debian bookworm InRelease
Hit:4 https://download.virtualbox.org/virtualbox/debian bookworm InRelease
Hit:5 https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit:8 http://deb.debian.org/debian bookworm InRelease
Hit:9 https://linux.teamviewer.com/deb stable InRelease
Hit:10 http://deb.debian.org/debian bookworm-updates InRelease
Get:11 http://download.zerotier.com/debian/bookworm bookworm InRelease
Get:12 https://packages.microsoft.com/repos/ms-teams stable InRelease [5,931 B]
Ign:7 https://repo.vivaldi.com/stable/deb stable InRelease
Hit:13 https://repo.vivaldi.com/stable/deb stable Release
Hit:14 https://linux-clients.seafile.com/seafile-deb/bookworm stable InRelease
Hit:15 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/bullseye pgadmin4 InRelease
Err:11 http://download.zerotier.com/debian/bookworm bookworm InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1657198823E52A61
Hit:6 https://packagecloud.io/ookla/speedtest-cli/debian bullseye InRelease
53.9 kB received in 6s (8,434 B/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: http://deb.anydesk.com/dists/all/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: https://download.virtualbox.org/virtualbox/debian/dists/bookworm/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: An error occurred during the signature verification. The repository is not updated, and the previous index files will be used. GPG error: http://download.zerotier.com/debian/bookworm bookworm InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1657198823E52A61
W: https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/bullseye/dists/pgadmin4/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Failed to fetch http://download.zerotier.com/debian/bookworm/dists/bookworm/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1657198823E52A61
W: The download of some index files failed, they have been ignored, or old ones used instead.
This error is due to missing public keys for certain repositories, such as the “download.zerotier.com” repository. thank you for your help!