Running train.py results in ValueError from dataclasses

[leleogere]

I'm trying to play a bit with ScorePerformer to understand it better. I installed all requirements in a new environment, and I did not change anything in the code. When trying to execute the train.py script, I'm getting an error from dataclasses:

$ python scoreperformer/train.py
Traceback (most recent call last):
  File "/home/user/ScorePerformer/scoreperformer/train.py", line 5, in <module>
    from scoreperformer.experiments import Trainer
  File "/home/user/ScorePerformer/scoreperformer/experiments/__init__.py", line 1, in <module>
    from .trainer import Trainer
  File "/home/user/ScorePerformer/scoreperformer/experiments/trainer.py", line 22, in <module>
    from scoreperformer.models.base import Model
  File "/home/user/ScorePerformer/scoreperformer/models/__init__.py", line 2, in <module>
    from .scoreperformer import (
  File "/home/user/ScorePerformer/scoreperformer/models/scoreperformer/__init__.py", line 1, in <module>
    from .embeddings import TupleTokenEmbeddings, TupleTokenLMHead, TupleTokenTiedLMHead
  File "/home/user/ScorePerformer/scoreperformer/models/scoreperformer/embeddings.py", line 12, in <module>
    from scoreperformer.modules.transformer import DiscreteContinuousEmbedding, DiscreteDenseContinuousEmbedding
  File "/home/user/ScorePerformer/scoreperformer/modules/transformer/__init__.py", line 21, in <module>
    from .transformer import (
  File "/home/user/ScorePerformer/scoreperformer/modules/transformer/transformer.py", line 34, in <module>
    @dataclass
     ^^^^^^^^^
  File "/home/user/miniconda3/envs/ScorePerformer/lib/python3.11/dataclasses.py", line 1232, in dataclass
    return wrap(cls)
           ^^^^^^^^^
  File "/home/user/miniconda3/envs/ScorePerformer/lib/python3.11/dataclasses.py", line 1222, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/miniconda3/envs/ScorePerformer/lib/python3.11/dataclasses.py", line 958, in _process_class
    cls_fields.append(_get_field(cls, name, type, kw_only))
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/miniconda3/envs/ScorePerformer/lib/python3.11/dataclasses.py", line 815, in _get_field
    raise ValueError(f'mutable default {type(f.default)} for field '
ValueError: mutable default <class 'scoreperformer.modules.transformer.attention.AttentionConfig'> for field attention is not allowed: use default_factory

I know that I should probably pass some parameters to the script (e.g. data location), but I assume that the script should error due to missing parameters rather than this one.

By the way, having an example of a training command would be very valuable!