The stack with the Hair&Fur modifier is not collapsed.

To render the fur correctly, you need to enable mr prim in the Effects section.

! Please note that the stability of the render depends on the amount of RAM in your computer. Always save the scene before rendering the fur.

The export file (OBJ) lacks the Hair and Fur modifier, so the file contains guide splines, and an image with the settings for the Corona modifier is attached in the archive.