エラー：「http://security.ubuntu.com/ubuntu/dists/bionic-security/main/binary-armhf/Packages 404が見つかりません[IP：91.189.91.26 80]」

Question

これが私のSudo apt updateです：

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

そして、私のsources.listは次のようになります。

#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

ここでの問題は何ですか？

i squared - Keep it Real · Answer

次の操作を行うと、問題が修正されます。

Sudo dpkg --remove-architecture armhf