How to add a repository?

[choise359]

How to add a repository? when I try to add I see this:
Cmd('git') failed due to: exit code(128) cmdline: git clone -v --recursive --depth=1 --shallow-submodules -- https://github.com/frenck/action-addon- linter/releases /data/addons/git/940e6699 stderr: 'Cloning into '/data/addons/git/940e6699'... remote: Not Found fatal: repository 'https://github.com/frenck/action-addon -linter/releases/'not found'