Hello,

Thank you, I had an old version. Now...
Node -v

6.11.1

I remade, point 4 and 5, ok, I have no more error is already better.
Now I connexion..................................................  and write a message "grayed"
I installed JotServer in /jotserver/jot-server-1.0.0/
So I put this as URL in the messenger settings ....

What can I do?