#if your following this tutorial: https://packaging.ubuntu.com/html/packaging-new-software.html
#easiest thing to do is use ubuntu 18 instead of 20 (tutorial is outdated)

#if you can't use ubuntu 18, you will need to build newer version 
#of breezy from source as (3.0.1 default package has issues on ubuntu 20),
#latest sources can be downloaded at https://launchpad.net/brz/+download