Problem exporting Skeletal Mesh From Maya

Hi,

I am trying to export a piece of my skeletal mesh into Unreal but I encountered that the bone is missing in UE and is show only 1 bone with the name of the mesh

And there is no Warning or Error during the import.

Here is the file

(I cant put attachment because it says:“This attachment is not permitted because the file type is invalid” I’ve tryed to put in the rar, rename it as txt or png not working at all So I put it into drive)

I have the same problem. Ever find a fix?