mini31 # apt update
Hit:1 http://security.debian.org/debian-security buster/updates InRelease
Ign:2 http://ftp.debian.org/debian jessie InRelease
Hit:3 http://deb.debian.org/debian buster InRelease
Hit:4 http://ftp.debian.org/debian jessie Release
Hit:5 http://deb.debian.org/debian buster-updates InRelease
Hit:6 https://repos.influxdata.com/debian buster InRelease
Hit:7 https://deb.nodesource.com/node_16.x buster InRelease
Hit:8 https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease
Get:9 https://packages.microsoft.com/debian/9/prod stretch InRelease [4,008 B]
Get:10 https://packages.microsoft.com/ubuntu/16.04/mssql-server-2017 xenial InRelease [3,995 B]
Err:11 http://ftp.debian.org/debian jessie Release.gpg
The following signatures were invalid: EXPKEYSIG 7638D0442B90D010 Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org> EXPKEYSIG CBF8D6FD518E17E1 Jessie Stable Release Key <debian-release@lists.debian.org> 75DDC3C4A499F1A18CB5F3C8CBF8D6FD518E17E1
Fetched 8,003 B in 1s (5,673 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ftp.debian.org/debian jessie Release: The following signatures were invalid: EXPKEYSIG 7638D0442B90D010 Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org> EXPKEYSIG CBF8D6FD518E17E1 Jessie Stable Release Key <debian-release@lists.debian.org> 75DDC3C4A499F1A18CB5F3C8CBF8D6FD518E17E1
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie/Release.gpg The following signatures were invalid: EXPKEYSIG 7638D0442B90D010 Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org> EXPKEYSIG CBF8D6FD518E17E1 Jessie Stable Release Key <debian-release@lists.debian.org> 75DDC3C4A499F1A18CB5F3C8CBF8D6FD518E17E1
W: Some index files failed to download. They have been ignored, or old ones used instead.
mini31 #
What do I do? (Debian 10.)
