Python Version for pybullet examples

[yi-fan-li]

Hi, I've been exploring the paper and wanted to use PDDLstream for a class project. But the examples for pybullet don't run consistently. examples.pybullet.pr2.run can start, but eventually crashes with the error message: AttributeError: 'UniqueOptValue' object has no attribute 'values'. I suspect its a Python version issues, as examples.pybullet.pr2_belief.run can run on 3.8.11 but not on 3.12. I was hoping you could clarify what Python version your running the repository with?