[Bug] EOFError during env.reset() caused by missing HM3D .basis.scene_instance.json files

[wzj0118]

Description

I'm encountering an EOFError when running main_llm_vis.py. The error appears during the env.reset() stage, as shown in the following traceback:
Traceback (most recent call last): File "main_llm_vis.py", line 1010, in main() File "main_llm_vis.py", line 151, in main obs, infos = envs.reset() ... File "/home/wen/anaconda3/envs/L3mvn/lib/python3.8/multiprocessing/connection.py", line 383, in _recv raise EOFError EOFError

This is followed by a secondary exception in VectorEnv.__del__() when calling env.close().

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Suspected Cause

After checking the dataset under data/scene_datasets/hm3d/val/00877-4ok3usBNeis, I found that the required 4ok3usBNeis.basis.scene_instance.json file is missing, while the corresponding .glb and .navmesh files do exist.

Also, in the file hm3d_annotated_basis.scene_dataset_config.json, the scene is listed as:

"val/00877-4ok3usBNeis/*.basis.scene_instance.json"

##Conclusion
This suggests the JSON instance file is expected to be there, but is not included in the dataset downloaded via:
'python -m habitat_sim.utils.datasets_download --username <api-token-id> --password <api-token-secret> --uids hm3d_val'

So why is the *.basis.scene_instance.json file missing for scene 4ok3usBNeis, despite being listed in the config? Was this file not included in the official release, or is there another way to obtain it? (confused)