microsoft/autogen · error · NotImplementedError

Tried to load component {component_class} which is on versio

Error message

Tried to load component {component_class} which is on version {component_class.component_version} with a config on version {loaded_config_version} but _from_config_past_version is not implemented

What it means

Error "Tried to load component {component_class} which is on version {component_class.component_version} with a config on version {loaded_config_version} but _from_config_past_version is not implemented" thrown in microsoft/autogen.

Source

Thrown at python/packages/autogen-core/src/autogen_core/_component_config.py:290

        module = importlib.import_module(module_path)
        component_class = module.__getattribute__(class_name)

        if not is_component_class(component_class):
            raise TypeError("Invalid component class")

        # We need to check the schema is valid
        if not hasattr(component_class, "component_config_schema"):
            raise AttributeError("component_config_schema not defined")

        if not hasattr(component_class, "component_type"):
            raise AttributeError("component_type not defined")

        loaded_config_version = loaded_model.component_version or component_class.component_version
        if loaded_config_version < component_class.component_version:
            try:
                instance = component_class._from_config_past_version(loaded_model.config, loaded_config_version)  # type: ignore
            except NotImplementedError as e:
                raise NotImplementedError(
                    f"Tried to load component {component_class} which is on version {component_class.component_version} with a config on version {loaded_config_version} but _from_config_past_version is not implemented"
                ) from e
        else:
            schema = component_class.component_config_schema  # type: ignore
            validated_config = schema.model_validate(loaded_model.config)

            # We're allowed to use the private method here
            instance = component_class._from_config(validated_config)  # type: ignore

        if expected is None and not isinstance(instance, cls):
            raise TypeError("Expected type does not match")
        elif expected is None:
            return cast(Self, instance)
        elif not isinstance(instance, expected):
            raise TypeError("Expected type does not match")
        else:
            return cast(ExpectedType, instance)

View on GitHub (pinned to 027ecf0a37)

Solutions

1. Implement _from_config_past_version on the component

Example fix

def _from_config_past_version(cls, config, version): ...

When it happens

Trigger: Thrown at python/packages/autogen-core/src/autogen_core/_component_config.py:290 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/autogen@027ecf0a37 (2026-08-15). Data as JSON: /api/errors/66eb158a58ef5945. Report an issue: GitHub.