> For the complete documentation index, see [llms.txt](https://tk233.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tk233.gitbook.io/notes/ml-rl/setting-up-nvidia-tools/nvidia-isaac-gym-urdf-import-notes.md).

# NVIDIA Isaac Gym URDF Import Notes

```bash
Adding actor 'humanoid-urdf/gym/urdf/robot.urdf' to env 0
Segmentation fault (core dumped)
```

This error could due to multiple reasons, and here's an incomplete checklist

* [ ] Make sure there are \<collision> tags in the link
* [ ] Make sure mesh filename are correct
* [ ] Make sure there is at least one DoF