Unable to start Migration in Plesk: The repository 'http://autoinstall.plesk.com/PMM_0.1.11 jammy InRelease' is not signed

Symptoms

• Migration fails with the following error:

CONFIG_TEXT: Error: ERR [panel] Execution plesk-migrator-post-install-packages.sh has failed with exit code 1, stdout: Bootstrapping dependencies for ubuntu jammy... , stderr: ERROR:root:Unable to create repository configuration: apt-get failed to perform update. W: GPG error: http://autoinstall.plesk.com/PMM_0.1.11 jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BD11A6AA914BDF7E E: The repository 'http://autoinstall.plesk.com/PMM_0.1.11 jammy InRelease' is not signed

• The following key is missing from the server:

# ls -lash /etc/apt/keyrings/plesk.gpg
ls: cannot access '/etc/apt/keyrings/plesk.gpg': No such file or directory

Cause

Corrupted GPG Key.

Resolution

1. Connect to the server via SSH

2. Restore the key using the following command:

# curl -sS http://autoinstall.plesk.com/plesk.gpg | gpg --dearmor >> /etc/apt/keyrings/plesk.gpg