Unexpected result running demo

I run the bash/test.sh on the demo.obj.
After the first material estimation step，I get the following results，whose albedo，metallic and roughness are unexpected...

After running all the test script，I get the results like this，they are also unexpected，with the white albedo

I just changed the path of pretrained models to mine， and change the initial texture from unfounded texture_kd.png to this：
init_texture = Image.new('RGB', (args.uv_size, args.uv_size), color=(255, 255, 255))

The settings are as follows：

CUDA_VISIBLE_DEVICES=2 python scripts/generate_texture_pbr_3d.py \
--image2materials_model ./pretrained_models/material_estimator \
--uvrefine_model ./pretrained_models/material_refiner \
--input_dir $mesh_dir \
--output_dir $output_dir \
--obj_name mesh \
--obj_file mesh.obj \
--prompt "a rusty orange robot, ultra realistic" \
--add_view_to_prompt \
--ddim_steps 50 \
--new_strength 1 \
--update_strength 0.5 \
--view_threshold 0.1 \
--blend 0 \
--dist 1.2 \
--num_viewpoints 36 \
--viewpoint_mode predefined \
--use_principle \
--update_steps 0 \
--update_mode heuristic \
--seed 42 \
--post_process \
--device 2080 \
--use_objaverse # assume the mesh is normalized with y-axis as up