Backup - no download link

Thanks a lot.
I’ve executed it and it finish without error.
But if I do run “apt update”, I got this error-message:

W: GPG error: https://software.virtualmin.com/vm/6/gpl/apt virtualmin-universal InRelease: The following signatures were invalid: EXPKEYSIG D9F9010760D62A6B Virtualmin, Inc. (Package signing key for Virtualmin 6) <security@virtualmin.com>
E: The repository 'https://software.virtualmin.com/vm/6/gpl/apt virtualmin-universal 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.

Should be 7 not 6 that must have been a link to the old version. I’m not sure if your version of virtualmin as the setup repros option it may be worth searching the forum for that