Cadquery for wind turbine blade

Hi, I'm trying to use cadquery to build a wind turbine blade. I'm defining the blade sections by sections along the spanwise direction. Each section has a specific airfoil shape, twist and chord length. I have successfully build the airfoils sections along the span by inputting coordinates and closing them by polyline() function.

After all the sections are built, I define a path along the spanwise direction to do the sweep() function. However, I always get errors like "Standard_ConstructionError: BRepFIll:: profiles are inconsistent", or "Standard_NoSuchObject:BRepFill::SameNumberByPolarMethod failed", even though I use the same number of coordinates for each airfoil section! I believe this problem is caused by the different airfoil shape along the span, as I can successfully build the blade using the same airfoil for all spanwise locations.

Does anyone have suggestions how to solve this problem? Many thanks!