Can anyone give me some hints on how this happens and what I should do?
[4.845s] [ext: omni.importer.urdf-1.14.1] startup
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path base_link-base_link_inertia is not a valid usd path, modifying to base_link_base_link_inertia
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path base_link-base_fixed_joint is not a valid usd path, modifying to base_link_base_fixed_joint
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path wrist_3-flange is not a valid usd path, modifying to wrist_3_flange
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path flange-tool0 is not a valid usd path, modifying to flange_tool0
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path base_link-base_link_inertia is not a valid usd path, modifying to base_link_base_link_inertia
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path base_link-base_fixed_joint is not a valid usd path, modifying to base_link_base_fixed_joint
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path wrist_3-flange is not a valid usd path, modifying to wrist_3_flange
2024-06-26 17:04:16 [4,997ms] [Warning] [omni.importer.urdf] The path flange-tool0 is not a valid usd path, modifying to flange_tool0
2024-06-26 17:04:16 [4,999ms] [Error] [omni.usd] Runtime Error: in Open at line 893 of /buildAgent/work/ac88d7d902b57417/USD/pxr/usd/usd/stage.cpp – Failed to open layer @/home/zihe/Zihe/IsaacLab/source/extensions/omni.isaac.lab_assets/data/Robots/UR5e/Props/instanceable_meshes.usd@
Having similar issues when trying to load a URDF through sim_utils.UrdfFileCfg. Could anyone shed some light what could it be the cause?
This error message indicates that in a USD (Universal Scene Description) file, the path “base_link-base_link_inertia” is not a valid way to reference a specific part of the model, because USD paths should use underscores (“_”) instead of hyphens (“-”) to separate elements; therefore, the system is automatically changing it to “base_link_base_link_inertia” to make it a valid path.