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Ubuntu 18.04 TLS - apt-get update - 存储库 security.ubuntu.com 不再具有发布文件

tag-icon • tag-icon 18.04 apt updates
Ubuntu 18.04 TLS - apt-get update - 存储库 security.ubuntu.com 不再具有发布文件

我不明白为什么它不起作用。Ubuntu 18.04 应该支持到 2028 年 4 月

apt-get 更新

Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:4 http://archive.ubuntu.com/ubuntu bionic-backports InRelease                                     
Ign:2 https://security.ubuntu.com/ubuntu bionic-security InRelease                                    
Err:5 https://security.ubuntu.com/ubuntu bionic-security Release
  404  NOT FOUND [IP: 91.189.88.181 443]
Reading package lists... Done
E: The repository 'http://security.ubuntu.com/ubuntu bionic-security Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

lsb_发布-a；

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.5 LTS
Release:    18.04
Codename:   bionic

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