Dragonfly: Error with building footprints ‘NoneType’ object has no attribute ‘key’

Dear Ladybug community,

I get the error “NoneType’ object has no attribute ‘key’” with the component “BuildingFootprint” when I plug my surfaces.

I’ve noticed that when I remove 2 specific building footprints, it works. I find it strange because the footprint geometry is very simple (one of them is a simple rectangle) as you can see below in green.

Do you think this is cause by the geometry, and if yes, how to fix it?
Thank you
error_dragonfly.gh (56.0 KB)