Hello, I used to have this problem also. You must update a file in your own laptop :
open it with notepad
add a line below your last line with your NPO server Ip adress. In the end it should look like this :
“ip_npo” (TAB) “hostname_npo”
with ip_npo : the ip of the npo server
hostname_npo : the actual hostname of the npo (as seen on server’s terminal)
separate these two info with a “TAB”.