Hello Friends: I am using Debian for four or five days only and obviously I did something stupide while installing and trying to learn the system.
When I am using Synaptic can clicking 'update', it is giving me this error message << GPG error: http://ppa.launchpad.net/libreoffice/ppa/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 83FBA1751378B444The repository 'http://ppa.launchpad.net/libreoffice/ppa/ubuntu focal InRelease' is not signed. >> How to solve it? Thanks in Advance das Kolkata, WB, India http://ddts.randomink.org/
