我尝试过获取 php 8.0，但很麻烦，所以我想删除它，我也这么做了。现在当我更新时，我得到了这个：
ubuntu@ubuntu:~$ sudo apt update
Hit:1 https://download.docker.com/linux/ubuntu focal InRelease
Ign:2 https://packages.sury.org/php focal InRelease
Hit:3 http://ports.ubuntu.com/ubuntu-ports focal InRelease
Err:4 https://packages.sury.org/php focal Release
404 Not Found [IP: 104.21.18.148 443]
Get:5 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease [114 kB]
Hit:6 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease
Get:7 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease [101 kB]
Get:8 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease [114 kB]
Get:9 http://ports.ubuntu.com/ubuntu-ports focal-updates/restricted arm64 Packages [2992 B]
Get:10 http://ports.ubuntu.com/ubuntu-ports focal-updates/restricted Translation-en [57.0 kB]
Get:11 http://ports.ubuntu.com/ubuntu-ports focal-updates/multiverse arm64 Packages [7720 B]
Get:12 http://ports.ubuntu.com/ubuntu-ports focal-updates/multiverse Translation-en [6888 B]
Get:13 http://ports.ubuntu.com/ubuntu-ports focal-security/restricted arm64 Packages [2804 B]
Get:14 http://ports.ubuntu.com/ubuntu-ports focal-security/restricted Translation-en [47.8 kB]
Reading package lists... Done
E: The repository 'https://packages.sury.org/php focal Release' does not have 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.
我尝试阅读论坛上关于如何删除存储库的信息，但我不知道存储库的名称。我可以顺利安装和清除，但更新是主要问题。
答案1
编辑文件/etc/apt/sources.list，例如，使用 nano 编辑器：
sudo nano /etc/apt/sources.list
然后用“sury”repo 注释这些行，并#在行首添加。
然后返回终端，并重复该sudo apt-get update命令。