ERROR: Cannot get CSGBrush.
At: modules/csg/csg_shape.cpp:285
ERROR: mesh_add_surface_from_arrays: Condition "array_len == 0" is true.
At: servers/visual_server.cpp:965
ERROR: add_surface_from_arrays: Condition "len == 0" is true.
At: scene/resources/mesh.cpp:849
I tried others computer, and found them all have this problem.