Unwanted ratsnest connection

Hi all! I’m quite a newby! I’m trying to design a correct sketch (Breadboard view), in order to build a PCB.
I noted in my sketch there is an unwanted ratsnest connection between three resistors. I’ve no idea why it is there. I tried “delete ratsnest line” but no luck. Here there is a picture of my breadboard view.

What are your suggestions?
Thanks a lot, Valerio

look in you schematic view and your pcb view to see if there is a wire or trace connected, if so, delete that wire.