![错误：“无法获取 http://security.ubuntu.com/ubuntu/dists/bionic-security/main/binary-armhf/Packages 404 未找到 [IP：91.189.91.26 80]”](https://linux22.com/image/905440/%E9%94%99%E8%AF%AF%EF%BC%9A%E2%80%9C%E6%97%A0%E6%B3%95%E8%8E%B7%E5%8F%96%20http%3A%2F%2Fsecurity.ubuntu.com%2Fubuntu%2Fdists%2Fbionic-security%2Fmain%2Fbinary-armhf%2FPackages%20404%20%E6%9C%AA%E6%89%BE%E5%88%B0%20%5BIP%EF%BC%9A91.189.91.26%2080%5D%E2%80%9D.png)
这是我的sudo apt update：
Hit:1 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu bionic InRelease
Hit:2 http://repo.steampowered.com/steam precise InRelease
Hit:3 http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic InRelease
Ign:4 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 InRelease
Ign:5 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:6 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 Release
Hit:7 http://ppa.launchpad.net/obsproject/obs-studio/ubuntu bionic InRelease
Hit:8 http://dl.google.com/linux/chrome/deb stable Release
Get:9 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]
Get:10 http://us.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Get:14 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [179 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages [122 kB]
Ign:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
Ign:26 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Ign:27 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Get:12 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Ign:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
Ign:26 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Get:28 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1,019 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Ign:27 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Ign:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Ign:26 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Ign:27 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Err:15 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
404 Not Found [IP: 91.189.91.26 80]
Ign:26 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Ign:27 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Ign:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages
Ign:75 http://us.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:76 http://us.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:77 http://us.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Ign:78 http://us.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
Ign:79 http://us.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:80 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:81 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Ign:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages
Ign:75 http://us.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:76 http://us.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:77 http://us.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Ign:78 http://us.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
Ign:79 http://us.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:80 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:81 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Ign:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages
Ign:75 http://us.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:76 http://us.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:77 http://us.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Ign:78 http://us.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
Ign:79 http://us.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:80 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:81 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Err:29 http://us.archive.ubuntu.com/ubuntu bionic/main armhf Packages
404 Not Found [IP: 91.189.91.26 80]
Ign:75 http://us.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:76 http://us.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:77 http://us.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Err:78 http://us.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
404 Not Found [IP: 91.189.91.26 80]
Ign:79 http://us.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:80 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:81 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Fetched 414 kB in 3s (161 kB/s)
Reading package lists... Done
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/main/binary-armhf/Packages 404 Not Found [IP: 91.189.91.26 80]
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/bionic/main/binary-armhf/Packages 404 Not Found [IP: 91.189.91.26 80]
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/bionic-updates/main/binary-armhf/Packages 404 Not Found [IP: 91.189.91.26 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
(logging) bobv@bobv-ubuntu:/etc/apt$ sudo dpkg --remove-architecture i386
dpkg: error: cannot remove architecture 'i386' currently in use by the database
我的样子如下sources.list：
#deb cdrom:[Ubuntu 18.04 LTS _Bionic Beaver_ - Release amd64 (20180426)]/ bionic main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-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://us.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic universe
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-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://us.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-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://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-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 bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner
deb http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
这里的问题是什么？
答案1
执行以下操作即可解决问题：
sudo dpkg --remove-architecture armhf