Hello to everyone. Surfaces appear black when I convert my 3d model to gltf format. Whichever color coating I applied it still looks black and when I use the coating, nothing is visible. No albedo map normal map no metallic map. everything looks black. I inverted the mesh triangles but was unsuccessful. How could there be a problem with my model. Can you help with this topic.
My file: h t t p s ://w w w .dropbox.com/s/ouzp1sed7f5p6vz/black%20surface%20problem.rar?dl=0