GLTF Blender to R3f

Hey mates !

I am building a car app, and reccently I bought a van model to include on it.
I opened it on blender and exported as gltf.
The gltf model has an issue that the blender model does not have.

GTLF:

Blender:

I would like to ask you to help me troubleshoot this

Could you please help me ?
Thank you so much !"

Doesn’t seem like your normals came out correctly.

whats that ? Can you help me ?

Is there a smooth by angle modifier on the object in blender? If yes, apply it and reexport the model.

Keep in mind that the normals need to be enabled in the export settings in blender.