Sketchup Sefaira

Im a third year architecture student and I have been creating a model of my design to analyse in sefaira. However, it keeps saying the error message. I have tried many things and it just won’t work. This is essential for my coursework and I need to understand efficiency of the energy and daylighting within my design. The model is not too complicated as I have managed to simplify it. It might be the overlapping lines of the ground and first floor but other than that I am not sure what is causing this problem.

sefaira model~.skp (1.9 MB)

Hi Sophlouise14

There are two scenes in the model. Each scene has two buildings or at least parts of the building.

Which scene and the model(building) are you trying to simulate?