Can't export mesh to .fbx I'm new to Blender and I'm making a track for Assetto Corsa. It's an ambitious project but it's very important for me.
I can't export my track to a .fbx file. This error appears:


I leave my blend file for any checking you need. I uploaded it in mega because it exceeds the 30MB limit.
There was a nurbs path which wasn't cyclic and was tiny, also without material. When I deleted it everything was exported successfully.
There were also modifiers not applyed and scales and rotations not applied.