There are two errors in process_data program

[VV940]

The texture class in the program defines Ns, but there is no Ns data in the mtl file.

Another issue is that the ambient data written is inconsistent with the defined one.
Traceback (most recent call last):
File "preprocess_data.py", line 355, in
main(sys.argv[1:])
File "preprocess_data.py", line 344, in main
render(
File "/home/hps/py_project/DiffuScene-master/scripts/utils.py", line 234, in render
scene.add(r)
File "/home/hps/anaconda3/envs/diffuscene/lib/python3.8/site-packages/simple_3dviz/scenes.py", line 60, in add
renderable.init(self._ctx)
File "/home/hps/anaconda3/envs/diffuscene/lib/python3.8/site-packages/simple_3dviz/renderables/textured_mesh.py", line 197, in init
self.material = self._material
File "/home/hps/anaconda3/envs/diffuscene/lib/python3.8/site-packages/simple_3dviz/renderables/textured_mesh.py", line 229, in material
self._prog["ambient"].write(self._material.ambient.tobytes())
File "/home/hps/anaconda3/envs/diffuscene/lib/python3.8/site-packages/_moderngl.py", line 95, in write
self.ctx._write_uniform(
_moderngl.Error: invalid uniform size

Look forward to your answer, thank you