HELP : My FBX/OBJ come up with the following error

HELP ME ASAP

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Seems like some issue with your uvlayou, just a quess tho. but i would start by checking the uvlayout.
What app did you create your model in ?

looks like you made a mess of the uvw map , or you didn’t have one, you would get more help if you add pic of the mesh in your 3d program and which settings you used to export it

there is a lot of info in the Uneal engine docs section on how to set things up , check Static Mesh or Skeleton Mesh