microsoft/autogen · error · TypeError

Expected type does not match

Error message

Expected type does not match

What it means

Error "Expected type does not match" thrown in microsoft/autogen.

Source

Thrown at python/packages/autogen-core/src/autogen_core/_component_config.py:301

            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)


class ComponentSchemaType(Generic[ConfigT]):
    # Ideally would be ClassVar[Type[ConfigT]], but this is disallowed https://github.com/python/typing/discussions/1424 (despite being valid in this context)
    component_config_schema: Type[ConfigT]
    """The Pydantic model class which represents the configuration of the component."""

    required_class_vars = ["component_config_schema", "component_type"]

    def __init_subclass__(cls, **kwargs: Any):
        super().__init_subclass__(**kwargs)

View on GitHub (pinned to 027ecf0a37)

Solutions

1. Verify the component_type in the config matches the class loading it

Example fix

Align provider/component_type in the config with the target class

When it happens

Trigger: Thrown at python/packages/autogen-core/src/autogen_core/_component_config.py:301 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/a02982662218fc3d. Report an issue: GitHub.