Hello, I'm using a translator, so the context may be awkward.
I made a drawing and it says there's a problem like this.
What kind of concept is it?
I understand that space1-1 is a problem. But I don't know exactly what's wrong.
I don't know the basics because it's a drawing that was written without basic knowledge.
You can tell me how to search.
Thank you.(https://ifh.cc/v-nw5gka)
======= Face difference is self intersecting, result will not include this polygon, Initial area of other surface 'Face 245' 91.8579 does not equal post intersection area 3.36774