Why does the mesh disappear in Animation Sequence after importing from Blender?

I’m making the first-person game with a sword. I have no mesh and skeleton for FirstPersonCharacter, so I decided to animate the sword separately by adding a bone to it in Blender (not making it a socket, simply put). However, when I try to import the .fbx into Unreal Engine (4.27.2), the mesh in the Animation Sequence becomes tiny as hell. Any ways to fix it?