XML Error in playback_demonstrations_from_hdf5.py

[PraveenElango]

Hi, I tried running the following line of code in my robosuite directory to load and play a sample demonstration:

python playback_demonstrations_from_hdf5.py --folder ../models/assets/demonstrations/wipe/panda

However, I got the following error:
Creating window glfw Playing back random episode... (press ESC to quit) model_1.xml Creating window glfw Traceback (most recent call last): File "/home/praveen/robosuite/robosuite/scripts/playback_demonstrations_from_hdf5.py", line 70, in <module> xml = postprocess_model_xml(model_xml) File "/home/praveen/robosuite/robosuite/utils/mjcf_utils.py", line 511, in postprocess_model_xml tree = ET.fromstring(xml_str) File "/home/praveen/miniconda3/lib/python3.9/xml/etree/ElementTree.py", line 1348, in XML return parser.close() xml.etree.ElementTree.ParseError: syntax error: line 1, column 0

I then changed tree = ET.fromstring(xml_str) to tree = ET.parse(xml_str).

However, I now get a new error:

Creating window glfw Playing back random episode... (press ESC to quit) model_1.xml Creating window glfw Traceback (most recent call last): File "/home/praveen/robosuite/robosuite/scripts/playback_demonstrations_from_hdf5.py", line 70, in <module> xml = postprocess_model_xml(model_xml) File "/home/praveen/robosuite/robosuite/utils/mjcf_utils.py", line 512, in postprocess_model_xml tree = ET.parse(xml_str) File "/home/praveen/miniconda3/lib/python3.9/xml/etree/ElementTree.py", line 1229, in parse tree.parse(source, parser) File "/home/praveen/miniconda3/lib/python3.9/xml/etree/ElementTree.py", line 569, in parse source = open(source, "rb") FileNotFoundError: [Errno 2] No such file or directory: 'model_1.xml'
May I ask how can this be fixed? Thank you!

[yukezhu]

Hi @cremebrule this issue seems to come from the default wipe demonstrations collected on an older version of robosuite. I think the easiest way would be to recollect and update the demo files.

[cremebrule]

Hmm, I no longer have the spacemouse currently to re-collect demos. @amandlek might you still have a spacemouse by any chance?

[yukezhu]

The playback_demonstrations_from_hdf5.py script should work now with the v1.4 release. Closing this issue now.