Error 9 in YAT

Hi there,

I am trying to connect the controller of my mashine to my laptop. When I followed the manual, at the end of step "1. Connecting your Controller via USB - Windows" I encountered the Error 9 after typing M115 into YAT.

But the USB connection is valid, I selected the right port and right before this step, the Terminal form was filled with the correct information.

Maybe I missed something, but I also double checked it. Sorry I'm quite new to this topic.

thanks!