OSError: Parsing error in set_kps() during runtime

Hi, thank you for sharing this great project!

I'm trying to run the script `v2_rl_walk_mujoco.py` using your provided ONNX model and duck config file. The program detects `/dev/ttyACM0` correctly, but I run into this error:

It seems to come from the call to `set_kps()`. Do you have any suggestions on what format `self.kps` or `self.joints.values()` should follow?

- Environment: Raspberry Pi OS, Python 3.11
- USB detected: `/dev/ttyACM0`
- Config used: `duck_config.json`
- Model used: `BEST_WALK_ONNX_2.onnx`

Let me know if I can provide more debug info. Thanks a lot!