Range check error when loading TALOS MJCF description

[stephane-caron]

Bug description

Trying to load the TALOS MJCF description from MuJoCo Menagerie yields the following error:

$ python repro_script_below.py
Traceback (most recent call last):
  File "/home/pinlover/src/robot_descriptions.py/examples/load_in_pinocchio.py", line 23, in <module>
    robot = load_robot_description(args.name)
  File "/home/pinlover/.micromamba/envs/rdpin/lib/python3.13/site-packages/robot_descriptions/loaders/pinocchio.py", line 63, in load_robot_description
    robot = pin.RobotWrapper.BuildFromMJCF(
        filename=module.MJCF_PATH,
        root_joint=root_joint,
    )
  File "/home/pinlover/.micromamba/envs/rdpin/lib/python3.13/site-packages/pinocchio/robot_wrapper.py", line 58, in BuildFromMJCF
    robot.initFromMJCF(filename, *args, **kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/pinlover/.micromamba/envs/rdpin/lib/python3.13/site-packages/pinocchio/robot_wrapper.py", line 63, in initFromMJCF
    model, collision_model, visual_model = buildModelsFromMJCF(
                                           ~~~~~~~~~~~~~~~~~~~^
        filename, *args, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/pinlover/.micromamba/envs/rdpin/lib/python3.13/site-packages/pinocchio/shortcuts.py", line 269, in buildModelsFromMJCF
    return _buildModelsFromMJCF(filename, **kwargs)
  File "/home/pinlover/.micromamba/envs/rdpin/lib/python3.13/site-packages/pinocchio/shortcuts.py", line 286, in _buildModelsFromMJCF
    model = pin.buildModelFromMJCF(filename)
IndexError: vector::_M_range_check: __n (which is 0) >= this->size() (which is 0)

Expected behavior

Loading the description successfully.

Reproduction steps

Setup a conda environment:

$ conda install robot_descriptions

Then run the following script:

from robot_descriptions.loaders.pinocchio import load_robot_description

robot = load_robot_description("talos_mj_description")
print(f"Robot successfully loaded as {robot}")

System

• OS: Ubuntu 22.04
• Pinocchio version: 3.4.0 from conda-forge