ValueError: mutable default <class 'seqio.vocabularies.PassThroughVocabulary'> for field vocabulary is not allowed: use default_factory

[jli262]

Traceback (most recent call last):
File "/scenic/scenic/projects/vid2seq/vid2seq_test.py", line 13, in
from scenic.projects.vid2seq import trainer
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/scenic/projects/vid2seq/trainer.py", line 26, in
from scenic.projects.t5 import model as t5_model
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/scenic/projects/t5/model.py", line 29, in
from scenic.projects.t5 import layers
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/scenic/projects/t5/layers.py", line 9, in
from t5x import decoding
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/t5x/init.py", line 17, in
import t5x.adafactor
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/t5x/adafactor.py", line 64, in
from t5x import utils
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/t5x/utils.py", line 44, in
import seqio
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/seqio/init.py", line 18, in
from seqio.dataset_providers import *
File "/anaconda3/envs/vid2seq/lib/python3.11/site-packages/seqio/dataset_providers.py", line 60, in
@dataclasses.dataclass(frozen=True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/anaconda3/envs/vid2seq/lib/python3.11/dataclasses.py", line 1213, in wrap
return _process_class(cls, init, repr, eq, order, unsafe_hash,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/anaconda3/envs/vid2seq/lib/python3.11/dataclasses.py", line 958, in _process_class
cls_fields.append(_get_field(cls, name, type, kw_only))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/anaconda3/envs/vid2seq/lib/python3.11/dataclasses.py", line 815, in _get_field
raise ValueError(f'mutable default {type(f.default)} for field '
ValueError: mutable default <class 'seqio.vocabularies.PassThroughVocabulary'> for field vocabulary is not allowed: use default_factory

[jli262]

anyone meets this problem when implementing t5?

[igor17400]

I had the same error.
Did you manage to figure out @jli262 ?

[zbl94]

Same error here