obs, extras = self.env.get_observations() ValueError: too many values to unpack (expected 2)**

[Hubuwenxin]

Expected behavior
When i run the example, there is error that :
File "/home/hu/ana/rsl_rl/rsl_rl/runners/on_policy_runner.py", line 29, in init
obs, extras = self.env.get_observations()
ValueError: too many values to unpack (expected 2)
###################Here is the details#############################
(rl-go2) hu@hu-desktop:~/ana/legged_gym-master$ python3 legged_gym/scripts/train.py --task=anymal_c_flat
Importing module 'gym_38' (/home/hu/ana/isaacgym/python/isaacgym/_bindings/linux-x86_64/gym_38.so)
Setting GYM_USD_PLUG_INFO_PATH to /home/hu/ana/isaacgym/python/isaacgym/_bindings/linux-x86_64/usd/plugInfo.json
PyTorch version 1.10.0+cu113
Device count 1
/home/hu/ana/isaacgym/python/isaacgym/_bindings/src/gymtorch
Using /home/hu/.cache/torch_extensions/py38_cu113 as PyTorch extensions root...
Emitting ninja build file /home/hu/.cache/torch_extensions/py38_cu113/gymtorch/build.ninja...
Building extension module gymtorch...
Allowing ninja to set a default number of workers... (overridable by setting the environment variable MAX_JOBS=N)
ninja: no work to do.
Loading extension module gymtorch...
Setting seed: 1
Not connected to PVD
+++ Using GPU PhysX
Physics Engine: PhysX
Physics Device: cuda:0
GPU Pipeline: enabled
/home/hu/.local/lib/python3.8/site-packages/torch/functional.py:445: UserWarning: torch.meshgrid: in an upcoming release, it will be required to pass the indexing argument. (Triggered internally at ../aten/src/ATen/native/TensorShape.cpp:2157.)
return _VF.meshgrid(tensors, **kwargs) # type: ignore[attr-defined]
Traceback (most recent call last):
File "legged_gym/scripts/train.py", line 47, in
train(args)
File "legged_gym/scripts/train.py", line 42, in train
ppo_runner, train_cfg = task_registry.make_alg_runner(env=env, name=args.task, args=args)
File "/home/hu/ana/legged_gym-master/legged_gym/utils/task_registry.py", line 147, in make_alg_runner
runner = OnPolicyRunner(env, train_cfg_dict, log_dir, device=args.rl_device)
File "/home/hu/ana/rsl_rl/rsl_rl/runners/on_policy_runner.py", line 29, in init
obs, extras = self.env.get_observations()
ValueError: too many values to unpack (expected 2)
################################################

System (please complete the following information):

• OS: [Ubuntu 20.04]
• GPU: [RTX geforce 2060 ]
• CUDA: [11.0]
• GPU Driver: [525.147.05 ]

[Teddy-Liao]

same with you!

[Teddy-Liao]

It seems that i have figured it out, the "rsl_rl" has been updated, but you should use the old version of "rsl_rl".
Wish you good luck.

[Hubuwenxin]

when i changed the computer to 3080, everything is fine. It may need more than 8G memory card.

[laukik29]

It seems that i have figured it out, the "rsl_rl" has been updated, but you should use the old version of "rsl_rl". Wish you good luck.

can you please specify the version which worked for you. Thank you.

[laukik29]

when i changed the computer to 3080, everything is fine. It may need more than 8G memory card.

I have 3060ti, which is 8GB memory card, still getting the error.

[Mayankm96]

You should use RSL-RL v1.0.2 as mentioned in the readme

https://github.com/leggedrobotics/legged_gym?tab=readme-ov-file#installation

[laukik29]

You should use RSL-RL v1.0.2 as mentioned in the readme

https://github.com/leggedrobotics/legged_gym?tab=readme-ov-file#installation

I am using v1.0.2 and facing the issue.

[dmtrung14]

You should use RSL-RL v1.0.2 as mentioned in the readme

https://github.com/leggedrobotics/legged_gym?tab=readme-ov-file#installation

I am using v1.0.2 and facing the issue.

Make sure you have uninstalled v2.0.2 correctly.

[KevinGrey]

I downloaded rsl_rl V1.0.2
fixed

[liluxing153]

我是测试是 RSL-RL v1.0.2版本问题，指定 v1.0.2 ，就解决了。使用的是2080super显卡，版本号是470.128