PCB design KICAD warnings

I compiled the design in KICAD and came across the following warning. This could not allow me to create the PCB boarder line and it has forced the delaying of the PCB board. I have searched for the information on the internet on how i can solve the warning but without success. I think there is something that am not doing in the right way. Could anyone of you come up with a solution on the way forward?

Hi, have you seen this video? https://www.youtube.com/watch?v=wCFBOgDmUuY

This one addresses the problem that you’re facing.