lux devices command problem

[Muole]

How do I use "lux devices" command?
I tried to list my devices via lux devices, lux devices complex and lux devices simple command. But however, nothing happens, it is like ignoring the command. I'm not even sure how to use the command properly since I dont get any kind of feedback or error at all. Im sorry if I did anything wrong, I have no idea of Lux.