langchain-ai/langgraph · error · LangGraphDeprecatedSinceV05

`output` is deprecated and will be removed. Please use `outp

Error message

`output` is deprecated and will be removed. Please use `output_schema` instead.

What it means

Error "`output` is deprecated and will be removed. Please use `output_schema` instead." thrown in langchain-ai/langgraph.

Source

Thrown at libs/langgraph/langgraph/graph/state.py:244

            warnings.warn(
                "`config_schema` is deprecated and will be removed. Please use `context_schema` instead.",
                category=LangGraphDeprecatedSinceV10,
                stacklevel=2,
            )
            if context_schema is None:
                context_schema = cast(type[ContextT], config_schema)

        if (input_ := kwargs.get("input", MISSING)) is not MISSING:
            warnings.warn(
                "`input` is deprecated and will be removed. Please use `input_schema` instead.",
                category=LangGraphDeprecatedSinceV05,
                stacklevel=2,
            )
            if input_schema is None:
                input_schema = cast(type[InputT], input_)

        if (output := kwargs.get("output", MISSING)) is not MISSING:
            warnings.warn(
                "`output` is deprecated and will be removed. Please use `output_schema` instead.",
                category=LangGraphDeprecatedSinceV05,
                stacklevel=2,
            )
            if output_schema is None:
                output_schema = cast(type[OutputT], output)

        self.nodes = {}
        self.edges = set()
        self.branches = defaultdict(dict)
        self.schemas = {}
        self.channels = {}
        self.managed = {}
        self.compiled = False
        self.waiting_edges = set()

        self.state_schema = state_schema
        self.input_schema = cast(type[InputT], input_schema or state_schema)

View on GitHub (pinned to 38031739e5)

When it happens

Trigger: Thrown at libs/langgraph/langgraph/graph/state.py:244 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of langchain-ai/langgraph@38031739e5 (2026-08-26). Data as JSON: /api/errors/772a1cde96b1ac52. Report an issue: GitHub.