If after the linux apt update command you receive an error about NO_PUBKEY, similar to what is seen below: root@epyc:~# apt update Hit:1 http://de.archive.ubuntu.com/ubuntu focal InRelease Hit:2 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease Get:3 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB] Get:4 http://de.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB] Ign:5 http://dl.google.com/linux/mod-pagespeed/deb stable InRelease Get:6 http://dl.google.com/linux/mod-pagespeed/deb stable Release [2154 B] Get:7 http://dl.google.com/linux/mod-pagespeed/deb stable Release.gpg […]
