tensorflow/models · error · ConfigurationError

Class ' ' is not assigned to any collapsed category.

Error message

Class '{class_name}' is not assigned to any collapsed category.

What it means

Defensive sentinel in CollapsedCategoriesConfig.get_category_for_class: the feature is enabled and the lookup loop finished without finding class_name in any category's class list. from_yaml validates that every top-level class is mapped (the unmapped-classes error), so reaching this raise means that validation was bypassed — the config object was constructed directly in Python, mutated after parsing, or built with a hand-made mapping inconsistent with the classes list.

Solutions

  1. Construct configs via PipelineConfig.from_yaml so the mapping-covers-all-classes invariant is enforced
  2. If building programmatically, add the missing class to at least one category in the mapping
  3. Avoid mutating classes or mapping after validation; rebuild the config instead
Defensive patterns

Strategy: validation

When it happens

Trigger: Thrown at official/projects/waste_identification_ml/model_inference_with_tracking/sam3_dinov3_tracking_pipeline/config_loader.py:226 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/6efb6bc3931bb21e. Report an issue: GitHub.

Appendix: source

Thrown at official/projects/waste_identification_ml/model_inference_with_tracking/sam3_dinov3_tracking_pipeline/config_loader.py:226

    Args:
      class_name: The fine-grained class name to look up.

    Returns:
      The matching category name when the feature is enabled, or None when the
      feature is disabled.

    Raises:
      ConfigurationError: If the feature is enabled but the class is not present
        in any category (this indicates the validation in `from_yaml` was
        bypassed).
    """
    if not self.enable:
      return None
    for category_name, class_list in self.mapping.items():
      if class_name in class_list:
        return category_name
    raise ConfigurationError(
        f"Class '{class_name}' is not assigned to any collapsed category."
    )

  @property
  def category_names(self) -> list[str]:
    """Returns the configured category names in declaration order.

    Returns:
      List of category names. Empty list when the feature is disabled.
    """
    if not self.enable:
      return []
    return list(self.mapping.keys())


def build_collapsed_categories_config(
    raw_section: Mapping[str, Any] | None, classes: Sequence[str]
) -> CollapsedCategoriesConfig:

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