'obs_groups' must contain the 'policy' key

[light-years-run]

when i run: python legged_lab/scripts/train.py --task=g1_flat --headless --logger=tensorboard --num_envs=64

Traceback (most recent call last):
File "/home/wlb/work/LeggedLab/legged_lab/scripts/train.py", line 101, in
train()
File "/home/wlb/work/LeggedLab/legged_lab/scripts/train.py", line 85, in train
runner = OnPolicyRunner(env, agent_cfg.to_dict(), log_dir=log_dir, device=agent_cfg.device)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/wlb/miniconda3/envs/isaaclab/lib/python3.11/site-packages/rsl_rl/runners/on_policy_runner.py", line 45, in init
self.cfg["obs_groups"] = resolve_obs_groups(obs, self.cfg["obs_groups"], default_sets)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/wlb/miniconda3/envs/isaaclab/lib/python3.11/site-packages/rsl_rl/utils/utils.py", line 252, in resolve_obs_groups
raise ValueError(
ValueError: The observation configuration dictionary 'obs_groups' must contain the 'policy' key. Found keys: []

[davidzong1]

You should downgrade the version of the rsl_rl lib to below 3.0.0