W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY B493DBE84A1DB3CD
While trying to run an update in Ubuntu 14.04 was getting an error sudo apt-get update Hit http://security.ubuntu.com trusty-security InRelease Ign http://ppa.launchpad.net precise InRelease Get:1 http://ppa.launchpad.net precise Release.gpg [836 B] Hit http://security.ubuntu.com trusty-security/main Sources Hit http://ppa.launchpad.net precise Release Ign http://ppa.launchpad.net precise Release Hit http://security.ubuntu.com trusty-security/restricted Sources Ign http://ppa.launchpad.net precise/main amd64 Packages/DiffIndex Hit […]