Ubuntu 安装percona时出错

我使用这个命令

wget https://repo.percona.com/apt/percona-release_0.1-4.$(lsb_release -sc)_all.deb
dpkg -i percona-release_0.1-4.$(lsb_release -sc)_all.deb

sudoapt获得更新 我犯了这个错误

N: Ignoring file 'percona-release_0.1-4.xenial_all.deb.1' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'percona-release_0.1-4.xenial_all.deb' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/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/mc3man/trusty-media/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.

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我使用教程和虚拟环境。错误在哪里以及如何解决？

输出显示您已将Percona release.deb文件留在/etc/apt.sources.d中-目录将被扫描以查找文件。 将其从该文件夹移到其他地方，有关Percona发行版的消息将消失

您的错误与您安装的与Percona存储库无关的PPA有关。您可以找到有关的信息，其中一个选项是sudo add apt repository-remove ppa:whatever/ppa