I got the exact same problem. It happens because unreal “Could not find the bind pose”.
Usually this works https://www.youtube.com/watch?v=zkKmbla3vLU
But in my case it happened for every skeletal mesh that i made. So i tried every online solutions but didn’ t work.
Finally i fixed it reseting the fbx export options in maya to the preset “Autodesk Media & Entertainment”.
Probably some plugin or update changed my default export options.
I left this here in case is useful for someone. Sorry for the bump.