How to solve this problem?

[Hwaaan2]

ModuleNotFoundError: No module named '_gridencoder' This error appears, how do I resolve it?

[lukemelas]

Sorry for the late reply, I'm going though a lot of issues now. You probably figured this out already, but for others, you have to build the cuda extensions, as noted in the README:

# (Recommended) Build cuda extensions -- alternatively, they can be built on-the-fly
pip install ./raymarching
pip install ./shencoder
pip install ./freqencoder
pip install ./gridencoder