Importing R15 Rig Not Working

Hey currently, I am trying to work on a rthro mesh to import into roblox so that I have a way to model it in blender and also skin it so it looks better. However, when I try to import the fbx file as an r15 mesh, it malfunctions.

I also tried to look at the s15 mesh that roblox had but I couldn’t find any difference with mine besides the bone positions. I’m pretty new to blender so what am I missing.
Second Attempt.blend (1.4 MB)

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Realized my mistake, you have to rename the mesh parts with the ending suffix _Geo