[tde-users] Trouble Installing TDE in Devuan Chimaera

I have acquired a used HP Probook 440 G5, on which I have installed Devuan Chimaera. The Chimaera installer balked at adding | deb http://pkgmaster.devuan.org/merged chimaera-security main contrib non-free | deb-src http://pkgmaster.devuan.org/merged chimaera-security main contrib non-free which continue to fail to work after the install completed; I'm not sure just what they provide and if they are really necessary; I couldn't find any useful information about them in a web search. Perhaps these need to be working before installing Trinity? I followed the install instructions in the Trinity Wiki page <https://wiki.trinitydesktop.org/Devuan_Trinity_Repository_Installation_Instructions>, but | apt-get update fails with 'E: The repository ... does not have a Release file.' (see attached command output, etc.). Since all of my experience with Linux has been with openSUSE and RedHat, I'm not sure what to do to resolve these issues. Help!? :-) Leslie -- Operating System: Linux Distribution: openSUSE Leap 15.4 x86_64 Desktop Environment: Trinity Qt: 3.5.0 TDE: R14.0.12 tde-config: 1.0