The following signatures couldn’t be verified because the public key is not available ( ubuntu/debian)
error : Hit:1 http://security.debian.org/debian-security stretch/updates InRelease Ign:2 http://kambing.ui.ac.id/debian stretch InRelease Hit:3 http://kambing.ui.ac.id/debian stretch Release Hit:5 http://ftp.debian.org/debian stretch-backports InRelease Err:4 https://packages.sury.org/php stretch InRelease The following signatures […]