@Sebastian-Roth said in Adding needed repository... Failed!:

@Wayne-Workman The installer test seems absolutely fine but possibly that’s because you have the package software-properties-common pre-installed? Can you check on that? I have had a look at the logs from your installer tests but the package is not mentioned and that’s why I guess you have it pre-installed…

Yes, it’s pre-installed. This is on Ubuntu 18.04 server, minimal installation.

root@ip-10-0-0-165:~# dpkg -l | grep software-properties-common ii software-properties-common 0.96.24.32.7 all manage the repositories that you install software from (common)