无法执行 sudo apt-get update

Question

运行 sudo apt-get update 时出现以下错误

alika@vilnisi:~$ sudo apt-get update
[sudo] password for alika: 
Hit:1 http: //deb.playonlinux.com precise InRelease
Hit:2 http: //archive.ubuntu.com/ubuntu bionic InRelease                                     
Ign:3 http: //ppa.launchpad.net/glasen/freetype2/ubuntu bionic InRelease                     
Get:4 http:/ /archive.ubuntu.com/ubuntu bionic-updates InRelease [83,2 kB]                                                                           
Hit:5 https: //dl.winehq.org/wine-builds/ubuntu bionic InRelease                                                                                                  
Err:6 http: //ppa.launchpad.net/glasen/freetype2/ubuntu bionic Release                                                                                            
  404  Not Found [IP: 91.189.95.83 80]
Get:7 http: //archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]            
Get:8 http: //archive.ubuntu.com/ubuntu bionic-security InRelease [83,2 kB]
Reading package lists... Done                                     
E: The repository 'http:// ppa.launchpad.net/glasen/freetype2/ubuntu bionic 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.

Answer 1

可能是由于 Ubuntu 升级导致的，软件源存储库生成错误，因为它没有新 Ubuntu 18.04 的条目。
下面介绍如何修复它。使用应用程序图标或+

打开 Gnome 软件属性应用程序，输入，AltF2software-properties-gtkEnter

然后显示其他软件选项卡
查找与取消选中复选框ppa.launchpad.net/glasen/freetype2/ubuntu
将禁用软件安装源相关的
行 验证更改并重试sudo apt-get update


软件属性窗口示例