Sunhour analysis no results

Hi everyone!
I am relatively new to ladybug and grasshopper, tried to write a script for calculating the direct hours of sunlight on a plane at eyelevel in a building. However, all of a sudden the plane gives no results anymore (see the screenshot, calculated hours 0.0 even when I dragged it out of the building to test whether results would even show without the context of the building). Does anybody understand what is going wrong here…??

(in addition)

(asa new user you can only upload one media file? but for extra context)

Welcome to the discourse.
Try flipping the normal direction of the surface. It is probably pointing to the “wrong” direction (downwards instead of upwards).

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