W: GPG error: https://radxa-repo.github.io/bookworm rockchip-bookworm InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 883854C2D3D73467
E: The repository 'https://radxa-repo.github.io/bookworm rockchip-bookworm InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: https://radxa-repo.github.io/bookworm bookworm InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 883854C2D3D73467
E: The repository 'https://radxa-repo.github.io/bookworm bookworm InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.