Hi Christian, An update I tried reinstalling the ppa again and received the following error: Can you please advise what I'm doing wrong? pladmin@maser-devtest-kvm:~$ sudo apt-get update Hit:1 http://au.archive.ubuntu.com/ubuntu bionic InRelease Err:3 http://ppa.launchpad.net/ci-train-ppa-service/4503/ubuntu bionic InRelease 403 Forbidden [IP: 91.189.95.85 80] Get:4 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:2 http://au.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Get:5 http://au.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Get:6 http://ppa.launchpad.net/ci-train-ppa-service/4529/ubuntu bionic InRelease [20.8 kB] Reading package lists... Done E: Failed to fetch http://ppa.launchpad.net/ci-train-ppa-service/4503/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 91.189.95.85 80] E: The repository 'http://ppa.launchpad.net/ci-train-ppa-service/4503/ubuntu bionic InRelease' is no longer signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Release file for http://au.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease is not valid yet (invalid for another 13d 20h 8min 41s). Updates for this repository will not be applied. E: Release file for http://au.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease is not valid yet (invalid for another 13d 20h 9min 42s). Updates for this repository will not be applied. E: Release file for http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease is not valid yet (invalid for another 13d 22h 14min 55s). Updates for this repository will not be applied. E: Release file for http://ppa.launchpad.net/ci-train-ppa-service/4529/ubuntu/dists/bionic/InRelease is not valid yet (invalid for another 9d 3h 57min 50s). Updates for this repository will not be applied. FRANCISCO MENCHACASALES ENGINEER | https://about.me/francisco.menchaca