Welcome to the forum here where we try to be as helpful as we can.
As a first:
- It is strongly dis-advised to mix repositories from different distros, especially Ubuntu. Usually this just creates a mess ... as you have just ascertained.
To be clear, Elive does NOT (and never will) have an Ubuntu version. It is based on Debian (currently Buster on the Beta version) and nothing else.
Ubuntu itself is Debian based originally but has diverged from it's base in such a manner that mixing the repositories is taking a risk ... especially because adding ppa repos is Ubuntu specific thingy.
Whenever you come across an application on the internet ALWAYS check if it isn't simply offered by your distro already.
In this(your) case, do a search:
and subsequently simply install with:
So crudely put:
- Bugger Ubuntu and know Elive is way ahead of the pack.
You failed to give crucial information as to what version of Elive you are using, making it necessary for us to guess.
Please be more clear with future issues so we can be more precise in our answers/solutions.