E: The repository 'http://mirrors.cloud.aliyuncs.com/debian bullseye-backports Release' no longer has a Release file.
解决仓库错误：E: The repository 'http://mirrors.cloud.aliyuncs.com/debian bullseye-backports Release' no longer has a Release file.
Debian 11下，以下是解决方案
1.移除不再被支持的仓库源
# 删除错误的仓库配置
rm /etc/apt/sources.list.d/bullseye-backports.list
# 备份原配置
cp /etc/apt/sources.list /etc/apt/sources.list.bak
# 编辑sources.list (Debian 11 Bullseye)
nano /etc/apt/sources.list2.可考虑使用Debian仓库代替或者其他的源
# 清华大学镜像站配置（Debian 11 Bullseye）
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free
# 华为源
# 华为云镜像源配置（Debian 11 Bullseye）
deb https://repo.huaweicloud.com/debian/ bullseye main contrib non-free
deb-src https://repo.huaweicloud.com/debian/ bullseye main contrib non-free
deb https://repo.huaweicloud.com/debian-security/ bullseye-security main contrib non-free
deb-src https://repo.huaweicloud.com/debian-security/ bullseye-security main contrib non-free
deb https://repo.huaweicloud.com/debian/ bullseye-updates main contrib non-free
deb-src https://repo.huaweicloud.com/debian/ bullseye-updates main contrib non-free
deb https://repo.huaweicloud.com/debian/ bullseye-backports main contrib non-free
deb-src https://repo.huaweicloud.com/debian/ bullseye-backports main contrib non-free
应用新配置
# 1. 清除旧缓存
apt clean
sudo rm -rf /var/lib/apt/lists/*# 2. 更新源
apt update其他源
腾讯云
deb https://mirrors.cloud.tencent.com/debian/ bullseye main contrib non-free
deb-src https://mirrors.cloud.tencent.com/debian/ bullseye main contrib non-free
deb https://mirrors.cloud.tencent.com/debian-security/ bullseye-security main contrib non-free
deb-src https://mirrors.cloud.tencent.com/debian-security/ bullseye-security main contrib non-free
deb https://mirrors.cloud.tencent.com/debian/ bullseye-updates main contrib non-free
deb-src https://mirrors.cloud.tencent.com/debian/ bullseye-updates main contrib non-free
deb https://mirrors.cloud.tencent.com/debian/ bullseye-backports main contrib non-free
deb-src https://mirrors.cloud.tencent.com/debian/ bullseye-backports main contrib non-free网易源
deb http://mirrors.163.com/debian/ bullseye main contrib non-free
deb-src http://mirrors.163.com/debian/ bullseye main contrib non-free
deb http://mirrors.163.com/debian-security/ bullseye-security main contrib non-free
deb-src http://mirrors.163.com/debian-security/ bullseye-security main contrib non-free
deb http://mirrors.163.com/debian/ bullseye-updates main contrib non-free
deb-src http://mirrors.163.com/debian/ bullseye-updates main contrib non-free
deb http://mirrors.163.com/debian/ bullseye-backports main contrib non-free
deb-src http://mirrors.163.com/debian/ bullseye-backports main contrib non-free中科大源
deb https://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free
deb https://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib non-free
deb https://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free
deb https://mirrors.ustc.edu.cn/debian/ bullseye-backports main contrib non-free
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