[3.4.0.24] Error: Medium not attached: plugin:/ssu?repo

After recovering from unsuccessful update, Im calling
version --dup from the command line, and getting
Error: Medium not attached: plugin:/ssu?repo=adaptation0

What could be the reason for the error and how could it be resolved ?

anyone an idea, what these urls mean: plugin:/ssu?? i am also stuck on this after unsuccessful update :frowning: