Veeam Agent Linux i386 PGP

Get:1 http://repository.veeam.com/backup/linux/agent/dpkg/debian/public stable InRelease [5,272 B]
Hit:2 http://au.archive.ubuntu.com/ubuntu bionic InRelease
Err:1 http://repository.veeam.com/backup/linux/agent/dpkg/debian/public stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3268CF038EEC045B
Hit:3 http://ppa.launchpad.net/linux-schools/samba-latest/ubuntu bionic InRelease
Get:4 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:5 http://au.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Hit:6 http://ppa.launchpad.net/qbittorrent-team/qbittorrent-stable/ubuntu bionic InRelease
Hit:7 http://ppa.launchpad.net/remmina-ppa-team/remmina-next/ubuntu bionic InRelease
Get:8 http://au.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Reading package lists... Done
W: http://repository.veeam.com/backup/linux/agent/dpkg/debian/public/dists/stable/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: GPG error: http://repository.veeam.com/backup/linux/agent/dpkg/debian/public stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3268CF038EEC045B
E: The repository 'http://repository.veeam.com/backup/linux/agent/dpkg/debian/public stable 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: http://au.archive.ubuntu.com/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://ppa.launchpad.net/linux-schools/samba-latest/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://ppa.launchpad.net/qbittorrent-team/qbittorrent-stable/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://au.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://ppa.launchpad.net/remmina-ppa-team/remmina-next/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://au.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/veeam.gpg are ignored as the file is not readable by user '_apt' executing apt-key.