What does your setup look like?

That howto is for Raspbian x86, and when Piaware version was 3.6.3. That is why you ran into dependency issue.

For latest version of Piaware 3.8.0 on Ubuntu 18.04 / 19.10, here are the instructions:

Howto Install Piaware ver 3.8.0 on Ubuntu & Debian amd64