AttributeError: 'Camera' object has no attribute '_is_outdated'

[Lee-tingting]

请问大家有遇到过这个问题吗AttributeError: 'Camera' object has no attribute '_is_outdated'，在复现论文时候遇到了这个问题，isaaclab用的是1.2.0，isaacsim是4.2.0版本的

[Lee-tingting]

Traceback (most recent call last):
File "D:\Code\NavDP-master\teleop_imagegoal_wheeled.py", line 319, in
main()
File "D:\Code\NavDP-master\teleop_imagegoal_wheeled.py", line 150, in main
env = ManagerBasedRLEnv(env_config)
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\envs\manager_based_rl_env.py", line 75, in init
super().init(cfg=cfg)
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\envs\manager_based_env.py", line 136, in init
self.load_managers()
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\envs\manager_based_rl_env.py", line 115, in load_managers
super().load_managers()
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\envs\manager_based_env.py", line 213, in load_managers
self.observation_manager = ObservationManager(self.cfg.observations, self)
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\managers\observation_manager.py", line 69, in init
super().init(cfg, env)
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\managers\manager_base.py", line 130, in init
self._prepare_terms()
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\managers\observation_manager.py", line 337, in _prepare_terms
obs_dims = tuple(term_cfg.func(self._env, **term_cfg.params).shape)
File "D:\Code\NavDP-master\configs\tasks\wheeled_task.py", line 40, in camera_rgb_data
return asset.data.output['rgb']
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\sensors\camera\camera.py", line 174, in data
self._update_outdated_buffers()
File "D:\Code\NavDP-master\IsaacLab\source\extensions\omni.isaac.lab\omni\isaac\lab\sensors\sensor_base.py", line 284, in _update_outdated_buffers
outdated_env_ids = self._is_outdated.nonzero().squeeze(-1)
AttributeError: 'Camera' object has no attribute '_is_outdated'

[YiKkzl]

I encountered the exact same error when using --enable_cameras with IsaacLab + Isaac Sim 4.1.0:

ImportError: cannot import name 'DEFAULT_CHECKSUM_ALGORITHM' from 'botocore.httpchecksum'

Root cause: A version mismatch between AWS packages. My Conda environment had newer boto3/s3transfer, but Isaac Sim's bundled botocore was older, causing the import failure when omni.replicator.core initializes S3 connections.

Fix that worked for me:

# Activate your conda env first
pip uninstall boto3 botocore s3transfer aiobotocore -y
pip install boto3==1.28.61 botocore==1.31.61 s3transfer==0.7.0

After reinstalling compatible versions, the script ran successfully with --enable_cameras. Note: the first launch may take a few minutes for shader compilation (black screen/flicker is normal).