what is repository

reported error code “128” when it ended: Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.

ERROR: Couldn't find any revision to build. Verify the repository and branch configuration for this job.

The repository 'https://download.docker.com/linux/ubuntu focal Release' does not have a Release file

Git command to check for any conflicts between new and old versions on your repository

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

n see apt-secure(8) manpage for repository creation and user configuration details. ubuntu

Cannot retrieve metalink for repository: epel/i386. Please verify its path and try again

self hosted auto update custom wp plugin or theme - aka personal wordpress update repository

Cannot retrieve metalink for repository: epel/x86_64. Please verify its path and try again

The repository 'http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu bionic Release' does not have a Release file.