The new deb822 Debian Linux .sources format

With the latest Debian Linux apt, we now see Notice: Missing Signed-By in the sources.list(5) entry for 'http://dl.google.com/linux/earth/deb' Notice: Consider migrating all sources.list(5) entries to the deb822 .sources format Notice: The deb822 .sources format supports both embedded as well as external OpenPGP keys Notice: See apt-secure(7) for best practices in configuring repository signing. Yes, I know how to fix it for me, but please somebody tell the team, as the Feedback tool gets stuck for me.