Fix PGP Keys - apt-get update errorNov 032019
Can't install security updates:
sudo apt-get update && sudo apt-get dist-upgrade
first enter the following command in the terminal
sudo rm /var/lib/apt/lists/* -vf
then update your system by entering the following command in the terminal
sudo apt-get update && sudo apt-get upgrade
after this there should be no errors and everything should work fine.
The key(s) in the keyring /etc/apt/trusted.gpg.d/*** are ignored as the file has an unsupported filetype.