Using Xpra to Remotely Access an Ubuntu Unity desktop from Debian 11

In the Xpra documentation , it says that you can remotely access a Linux desktop with a command like: xpra start-desktop ssh://user@192.168.0.2 --start=fluxbox How would you do this if Ubunty Unity 22.04 is the remote desktop you're trying to access? I have xpra installed on both the client and the "server" (from the default repository), and I also have openssh-server installed on the Ubuntu Unity workstation: sudo apt install xpra openssh-server From Debian 11, I tried to access the Ubuntu Unity desktop like this: xpra start-desktop ssh://user@192.168.0.2 --start=ubuntu-unity-desktop And got this error: > Oh no! Something has gone wrong. A problem has occurred and the system > can't recover. Please log out and try again. [ Log Out ]