tensorflow/models · error · ValueError

Must specify exactly one of vocab_file (with matching lower_

Error message

Must specify exactly one of vocab_file (with matching lower_case flag) or preprocessing_hub_module_url.

What it means

Error "Must specify exactly one of vocab_file (with matching lower_case flag) or preprocessing_hub_module_url." thrown in tensorflow/models.

Source

Thrown at official/nlp/data/sentence_prediction_dataloader.py:212

    ]
    return self._pack_inputs(segments)


@data_loader_factory.register_data_loader_cls(SentencePredictionTextDataConfig)
class SentencePredictionTextDataLoader(data_loader.DataLoader):
  """Loads dataset with raw text for sentence prediction task."""

  def __init__(self, params):
    if bool(params.tfds_name) != bool(params.tfds_split):
      raise ValueError('`tfds_name` and `tfds_split` should be specified or '
                       'unspecified at the same time.')
    if bool(params.tfds_name) == bool(params.input_path):
      raise ValueError('Must specify either `tfds_name` and `tfds_split` '
                       'or `input_path`.')
    if not params.text_fields:
      raise ValueError('Unexpected empty text fields.')
    if bool(params.vocab_file) == bool(params.preprocessing_hub_module_url):
      raise ValueError('Must specify exactly one of vocab_file (with matching '
                       'lower_case flag) or preprocessing_hub_module_url.')

    self._params = params
    self._text_fields = params.text_fields
    self._label_field = params.label_field
    self._label_type = params.label_type
    self._include_example_id = params.include_example_id
    self._text_processor = TextProcessor(
        seq_length=params.seq_length,
        vocab_file=params.vocab_file,
        tokenization=params.tokenization,
        lower_case=params.lower_case,
        preprocessing_hub_module_url=params.preprocessing_hub_module_url)

  def _bert_preprocess(self, record: Mapping[str, tf.Tensor]):
    """Berts preprocess."""
    segments = [record[x] for x in self._text_fields]
    model_inputs = self._text_processor(segments)

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/nlp/data/sentence_prediction_dataloader.py:212 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tensorflow/models@e006f5f0d5 (2026-08-24). Data as JSON: /api/errors/63eeb6ffea6f1dcb. Report an issue: GitHub.