ImportError: cannot import name 'PointTensor' from 'torchsparse.tensor'

[zeliangDing]

When I run this command "python demo.py --cfg ./config/demo.yaml"
Some trouble happened, like this:

What's wrong with it?
My environment:
Ubuntu 18.04
Pytorch+Cuda: 1.9.0+cu111
Python: 3.7

[or-else]

Did you solve this?

[or-else]

Requires downgrade to torchsparse 2.0.0:

mit-han-lab/torchsparse#230