ubuntu arm64 binary-arm64/Packages 404 Not Found
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal/main/binary-arm64/Packages 404 Not Found [IP: 91.189.91.83 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-updates/main/binary-arm64/Packages 404 Not Found [IP: 91.189.91.83 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-security/main/binary-arm64/Packages 404 Not Found [IP: 91.189.91.83 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-backports/main/binary-arm64/Packages 404 Not Found [IP: 91.189.91.83 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
replace all archive.ubuntu.com/ubuntu/ to ports.ubuntu.com/ubuntu-ports/
#http://archive.ubuntu.com/ubuntu/
http://ports.ubuntu.com/ubuntu-ports/
/etc/apt/source.list
deb http://ports.ubuntu.com/ubuntu-ports/ focal main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ focal main restricted universe multiverse
deb http://ports.ubuntu.com/ubuntu-ports/ focal-updates main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ focal-updates main restricted universe multiverse
deb http://ports.ubuntu.com/ubuntu-ports/ focal-security main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ focal-security main restricted universe multiverse
deb http://ports.ubuntu.com/ubuntu-ports/ focal-backports main restricted universe multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ focal-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner
deb [arch=arm64] http://ports.ubuntu.com/ focal main multiverse universe
deb [arch=arm64] http://ports.ubuntu.com/ focal-security main multiverse universe
deb [arch=arm64] http://ports.ubuntu.com/ focal-backports main multiverse universe
deb [arch=arm64] http://ports.ubuntu.com/ focal-updates main multiverse universe
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