我浏览过这个帖子，但我读过或尝试过的方法都无法解决这个问题。我安装了 wine，但我把它删除了，因为我不想弄乱它。这似乎对我造成了影响。当我这样做时，sudo apt update我收到：
Err:1 http://your.repo.domain/repository disco InRelease
Could not resolve 'your.repo.domain'
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease
Get:3 https://dl.winehq.org/wine-builds/ubuntu disco InRelease [6,255 B]
Ign:4 http://us.archive.ubuntu.com/ubuntu artful-updates InRelease
Err:5 http://us.archive.ubuntu.com/ubuntu artful-updates Release
404 Not Found [IP: 91.189.91.26 80]
Hit:6 http://dl.google.com/linux/chrome/deb stable Release
Hit:7 http://archive.ubuntu.com/ubuntu disco InRelease
Hit:8 http://archive.ubuntu.com/ubuntu disco-updates InRelease
Get:10 https://dl.winehq.org/wine-builds/ubuntu disco/main i386 Packages [42.1 kB]
Hit:11 http://archive.ubuntu.com/ubuntu disco-backports InRelease
Hit:12 http://archive.ubuntu.com/ubuntu disco-security InRelease
Get:13 https://dl.winehq.org/wine-builds/ubuntu disco/main amd64 Packages [39.5 kB]
Reading package lists... Done
E: The repository 'http://us.archive.ubuntu.com/ubuntu artful-updates Release' no longer has a Release file.
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.
我用过的精通 Linux，但那是 10 年前的事了，现在我不知道自己在做什么。有人能像我 5 岁的时候一样向我解释如何解决这个问题吗？我将我的服务器更改为主服务器。
我从其他软件中删除了 wine，它说要重新加载软件，所以我照做了，但失败了，说：E:The repository 'http://us.archive.ubuntu.com/ubuntu artful-updates Release' does not have a Release file.当搜索来源时，我看到这。我现在正在运行备份，正如另一个帖子所建议的那样，有人能帮我看看接下来该怎么办吗？非常感谢！！
更新：内容/etc/apt/sources.list
# deb cdrom:[Ubuntu 19.04 _Disco Dingo_ - Release amd64 (20190416)]/ disco main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu disco main restricted
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu disco-updates main restricted
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu disco universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco universe
deb http://archive.ubuntu.com/ubuntu disco-updates universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu disco multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco multiverse
deb http://archive.ubuntu.com/ubuntu disco-updates multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu disco-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ disco-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu disco partner
# deb-src http://archive.canonical.com/ubuntu disco partner
deb http://archive.ubuntu.com/ubuntu disco-security main restricted
# deb-src http://security.ubuntu.com/ubuntu disco-security main restricted
deb http://archive.ubuntu.com/ubuntu disco-security universe
# deb-src http://security.ubuntu.com/ubuntu disco-security universe
deb http://archive.ubuntu.com/ubuntu disco-security multiverse
# deb-src http://security.ubuntu.com/ubuntu disco-security multiverse
# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
# deb https://dl.winehq.org/wine-builds/ubuntu/ disco main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ disco main
deb http://us.archive.ubuntu.com/ubuntu/ artful-updates main
# deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ disco main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ disco main
# deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates main
# deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates main
# deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates main
更新 #2：运行 Jim 提供的命令后
leslie@leslie-Lenovo-YOGA-720-13IKB:~$ sudo sed -i '60s/.*/# &/' /etc/apt/sources.list
[sudo] password for leslie:
leslie@leslie-Lenovo-YOGA-720-13IKB:~$ sudo apt update
Err:1 http://your.repo.domain/repository disco InRelease
Could not resolve 'your.repo.domain'
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://dl.google.com/linux/chrome/deb stable Release
Hit:5 http://archive.ubuntu.com/ubuntu disco InRelease
Get:6 http://archive.ubuntu.com/ubuntu disco-updates InRelease [97.5 kB]
Get:7 http://archive.ubuntu.com/ubuntu disco-backports InRelease [88.8 kB]
Get:8 http://archive.ubuntu.com/ubuntu disco-security InRelease [97.5 kB]
Get:9 http://archive.ubuntu.com/ubuntu disco-updates/main amd64 DEP-11 Metadata [72.1 kB]
Get:10 http://archive.ubuntu.com/ubuntu disco-updates/universe amd64 DEP-11 Metadata [8,740 B]
Get:11 http://archive.ubuntu.com/ubuntu disco-updates/universe DEP-11 64x64 Icons [8,269 B]
Get:12 http://archive.ubuntu.com/ubuntu disco-backports/universe amd64 DEP-11 Metadata [7,164 B]
Get:13 http://archive.ubuntu.com/ubuntu disco-security/main amd64 DEP-11 Metadata [17.8 kB]
Get:14 http://archive.ubuntu.com/ubuntu disco-security/universe amd64 DEP-11 Metadata [1,480 B]
Fetched 399 kB in 2s (232 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://your.repo.domain/repository/dists/disco/InRelease Could not resolve 'your.repo.domain'
W: Some index files failed to download. They have been ignored, or old ones used instead.
答案1
E: The repository no longer has a Release file
似乎您artful的文件上有（Ubuntu 17.10）存储库/etc/apt/sources.list，因为它已达到 EOL（使用寿命结束） - 因此该存储库不再可用。
要解决这个问题，您需要删除或评论存储库，无论哪种方式都可以完成工作。
使用超级用户权限打开/etc/apt/sources.list。
sudo gedit /etc/apt/sources.list
查找此行。
deb http://us.archive.ubuntu.com/ubuntu/ artful-updates main
评论/删除它，如果你评论它，该行将看起来像这样。
# deb http://us.archive.ubuntu.com/ubuntu/ artful-updates main
#在行首添加标签符号，这将停用artful存储库。
Could not resolve 'your.repo.domain'
显然，OP 在包源列表中有一些未知来源，apt无法识别它，因此出现上述错误。
与之前的步骤相同，需要删除无法识别的源。
sudo rm /etc/apt/sources.list.d/your-repo-name.list
your-repo-name.list有问题的独立源列表在哪里。
再试sudo apt update一次，现在应该不会产生任何错误。