Когда я пытаюсь добавить ppa в свою систему как
sudo add-apt-repository ppa:shogun-toolbox/stable
sudo apt-get update
Я получаю следующие сообщения:
W: The repository 'http://ppa.launchpad.net/shogun-toolbox/stable/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/shogun-toolbox/stable/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
Как решить эти проблемы?
