msgpk unpack error

When running `run.sh` in bash without changing anything, I got the following error:
```
File "msgpack/_unpacker.pyx", line 205, in msgpack._cmsgpack.unpackb
ValueError: Unpack failed: incomplete input
```

This error occurs when getting the language model on line 641 of `alphageometry.py`: `model = get_lm(_CKPT_PATH.value, _VOCAB_PATH.value)` . The error comes from initializing the trainer on line 62 of lm_inference.py ` (tstate, _, imodel, prngs) = trainer.initialize_model()`. I have weights and vocabulary downloaded in `ag_cpkt_vocab` and checked that **_CKPT_PATH.value = 'ag_cpkt_vocab** and **_VOCAB_PATH.value = ag_ckpt_vocab/geometry.757.model**. How should I resolve this error? Appreciate your help.