Hi I was following the Ubuntu 22.04 upgrade instructions here - https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-22-04-jammy-jellyfish
When I did -
It was upgrading but it got stuck on this error -
Error during update A problem occurred during the update. This is usually some sort of network problem, please check your network connection and retry. W:Updating from such a repository can't be done securely, and is therefore disabled by default., W:See apt-secure(8) manpage for repository creation and user configuration details., W:GPG error: http://dl.google.com/linux/mod-pagespeed/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 78BD65473CB3BD13, E:The repository 'http://dl.google.com/linux/mod-pagespeed/deb stable Release' is not signed. Restoring original system state Aborting Reading package lists... Done Building dependency tree Reading state information... Done === Command detached from window (Sun Sep 11 13:42:03 2022) === === Command terminated with exit status 1 (Sun Sep 11 13:42:13 2022) ===
I’ve tried the following fix but it didn’t work - https://itsfoss.com/solve-gpg-error-signatures-verified-ubuntu/
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 78BD65473CB3BD13
What can I do to fix?
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