Estou tentando instalar alguns programas como o Runescape com o (terminal), mas recebo um erro 404. Estou usando o Xubuntu 16.04 LTS. Estou adicionando o PPA (e tento obter sudo apt-get update ), mas ele não consegue baixar e obter os seguintes erros.
W:The repository '-http://ppa.launchpad.net/hikariknight/unix-runescape-client/ubuntu xenial Release' does not have a Release file
data from such a repository can't be authenticated and is therefore potentially dangerous to use
W:See apt-secure(8) manpage for repository creation and user configuration details., E:Failed to fetch
ppa.launchpad.net/hikariknigh...amd64/Packages 404 Not Found
E:Failed to fetch //ppa.launchpad.net/hikariknigh...-i386/Packages 404 Not Found
E:Some index files failed to download. They have been ignored, or old ones used instead