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出现 apt-error

tag-icon • tag-icon apt package-management updates
出现 apt-error

我正在使用 18.04 版本。我想安装游戏 war zone 2100，所以我安装了它的依赖项，然后我收到此错误。我无法更新软件中心未打开。突触包管理器也未打开。在状态栏上，红色减号图标显示为错误。我甚至无法升级。apt 更新给了我这个错误。

Reading package lists... Done                                                 
E: Failed to fetch http://ppa.launchpad.net/webupd8team/popcorntime/ubuntu/dists/trusty/InRelease  403  Forbidden [IP: 91.189.95.83 80]
E: The repository 'http://ppa.launchpad.net/webupd8team/popcorntime/ubuntu trusty InRelease' is not 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: The value 'xenial' is invalid for APT::Default-Release as such a release is not available in the sources

答案1

实际上我只是粘贴了依赖项列表以进行下载和安装。出现错误后，我意识到源代码是 14.04 xenial。所以现在我后悔我的举动。我正在安装游戏 warzone 2100 3.3.0。

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