Why are all the values of the generated point cloud 0?

[qingfengmingyue]

python main.py --dataset data/images/ --config config/base.yaml

pointclouds

[[0. 0. 0.]
[0. 0. 0.]
[0. 0. 0.]
...
[0. 0. 0.]
[0. 0. 0.]
[0. 0. 0.]]