I imported a dxf file in KiCad and after finishing my layout I wanted to check the 3D model, and I always get the error “cannot determine board layout”. The 3D model does not show as well the correct cutout of the imported layout I am willing to print out (it still shows the rectangle). Do you know how to let the cutout come out right and how to solve the error? You can look at the screenshot for reference. Thanks!