I can't get the Mannequin skeleton I made to work in Unreal.

Hello.

I tried to make the exact same skeleton of the standard Mannequin skeleton on Unreal Engine 5 on Blender with the same names. With the same names but only the places are different. When I remove the skeleton of the Mannequin from Unreal Engine, apply it to my own character on Blender and restore it to Unreal Engine, everything fits smoothly when I use the “Assign Skeleton” option without any problems.

But when I extract the skeleton I made from scratch with the same names in the same way, the character looks like below. Where could I be making a mistake? I’ve been working on this problem for 2 weeks and I haven’t achieved anything.



Can anyone help me?