Comment 3 for bug 1372086

Sebastien Bacher (seb128) wrote :

that's easy to hit, just try to add a non existing ppa, e.g "sudo add-apt-repository ppa:user/name"

software-properties used to handle that correctly in trusty and display an message about the invalid ppa rather than an exception

https://errors.ubuntu.com/problem/f6de606db06b9ec0df787f3e055c073d2aa8e4b4