Hello I'm trying to extrude a closed spline but I get an error saying that it can not be extruded because sweep self intersects, I don't even understand what it means.
How can I solve it? The spline has the shape that I need it to be.
Select objects to extrude or [MOde]: _MO Closed profiles creation mode [SOlid/SUrface] <Solid>: _SO
Select objects to extrude or [MOde]: 1 found
Modeling Operation Error:
Sweep self intersects.
Unable to extrude the selected object.
What can I do? Thank you all