我在 Linux Mint 上使用 Synaptic 包管理器时遇到了一个恼人的问题，当我尝试更新存储库列表时，它只是给出错误 403。我无法找出问题的根源，因为所有来源都是最新的。我什至尝试删除所有源并一次添加一个源，但我仍然收到错误。
Failed to fetch http://repo.steampowered.com/steam/dists/precise/steam/source/Sources 403 Forbidden
Failed to fetch http://repo.steampowered.com/steam/dists/precise/steam/binary-amd64/Packages 403 Forbidden
Failed to fetch http://repo.steampowered.com/steam/dists/precise/steam/binary-i386/Packages 403 Forbidden
Failed to fetch http://mega.nz/linux/MEGAsync/xUbuntu_14.04/./Packages 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/main/source/Sources 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/upstream/source/Sources 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/import/source/Sources 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/upstream/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/import/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/upstream/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirrors.hustunique.com/linuxmint/dists/rebecca/import/binary-i386/Packages 403 Forbidden
Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/restricted/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/universe/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/multiverse/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/restricted/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/universe/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/multiverse/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/restricted/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/universe/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty/multiverse/binary-i386/Packages 403 Forbidden
Failed to fetch http://extra.linuxmint.com/dists/rebecca/main/source/Sources 403 Forbidden
Failed to fetch http://extra.linuxmint.com/dists/rebecca/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://extra.linuxmint.com/dists/rebecca/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/main/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/restricted/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/universe/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/multiverse/source/Sources 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/restricted/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/universe/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/multiverse/binary-amd64/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/restricted/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/universe/binary-i386/Packages 403 Forbidden
Failed to fetch http://mirror.aarnet.edu.au/pub/ubuntu/archive/dists/trusty-updates/multiverse/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/bartbes/love-stable/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/bartbes/love-stable/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/bartbes/love-stable/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/cinelerra-ppa/ppa/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/cinelerra-ppa/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/cinelerra-ppa/ppa/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/dimula73/krita/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/dimula73/krita/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/dimula73/krita/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/frederik-elwert/transcribe/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/frederik-elwert/transcribe/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/frederik-elwert/transcribe/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/glennric/dolphin-emu/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/glennric/dolphin-emu/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/glennric/dolphin-emu/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/mamarley/nvidia/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/mamarley/nvidia/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/mamarley/nvidia/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/noobslab/deepin-sc/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/noobslab/deepin-sc/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/noobslab/deepin-sc/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/obsproject/obs-studio/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/obsproject/obs-studio/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/obsproject/obs-studio/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ppsspp/stable/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ppsspp/stable/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ppsspp/stable/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/strukturag/libde265/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/strukturag/libde265/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/strukturag/libde265/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ubuntu-sdk-team/ppa/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ubuntu-sdk-team/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ubuntu-sdk-team/ppa/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/dists/trusty/main/source/Sources 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/dists/trusty/main/binary-amd64/Packages 403 Forbidden
Failed to fetch http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
Some index files failed to download. They have been ignored, or old ones used instead.
我已经尝试更改不同的服务器来下载软件包，但错误仍然存在，而且它变得非常烦人......我需要做什么力量它可以正确更新吗？