Err:6 https://packagecloud.io/slacktechnologies/slack/ubuntu jammy Release
404 Not Found [IP: 52.9.214.107 443]
Reading package lists... Done
E: The repository 'https://packagecloud.io/slacktechnologies/slack/ubuntu jammy 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.
答案1
打開Software & Updates。前往其他軟體，並刪除與 slack 相關的儲存庫。看來他們要嘛還不支援 Ubuntu 22.04，要嘛儲存庫不存在。