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:
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: