Problem installing Xbox One addon

Wondering if anyone can help me out here:

I’m trying to get this add-on working for Xbox One

Xbox One - unknownSKL

When I try to start it I get the following log:

rm: can’t remove ‘/root/.local/share/xbox/tokens.json’: No such file or directory
/ line 16: xbox-rest-server: command not found

I’ve tried installing ‘xbox-rest-server’ through a shell command and I just get a 15 second timeout message.

Any help is always appreciated.