In looking at the instructions from page one. I see that our instructions need updated. I can't edit the first post so I can't do that there.
I would start by checking your repos.
Mine look like this:
Code: Select all
Repos: No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/debian.list
1: deb http://ftp.us.debian.org/debian/ unstable main contrib non-free
Active apt repos in: /etc/apt/sources.list.d/npreining.list
1: deb https://download.opensuse.org/repositories/home:/npreining:/debian-kde:/frameworks/Debian_Unstable/ ./
2: deb https://download.opensuse.org/repositories/home:/npreining:/debian-kde:/plasma523/Debian_Unstable/ ./
3: deb https://download.opensuse.org/repositories/home:/npreining:/debian-kde:/apps2108/Debian_Unstable/ ./
4: deb https://download.opensuse.org/repositories/home:/npreining:/debian-kde:/other/Debian_Unstable/ ./
5: deb https://download.opensuse.org/repositories/home:/npreining:/debian-kde:/other-deps/Debian_Unstable/ ./