langchain-ai/langgraph · error · FileNotFoundError

Could not find local module: {resolved}

Error message

Could not find local module: {resolved}

What it means

Error "Could not find local module: {resolved}" thrown in langchain-ai/langgraph.

Source

Thrown at libs/cli/langgraph_cli/config.py:895

        else:
            raise ValueError(
                f"Graph '{graph_id}' must be a string or a dictionary with a 'path' key."
            )

        module_str, _, attr_str = import_str.partition(":")
        if not module_str or not attr_str:
            message = (
                'Import string "{import_str}" must be in format "<module>:<attribute>".'
            )
            raise ValueError(message.format(import_str=import_str))

        # Check for either forward slash or backslash in the module string
        # to determine if it's a file path.
        if "/" in module_str or "\\" in module_str:
            # Resolve the local path properly on the current OS
            resolved = (config_path.parent / module_str).resolve()
            if not resolved.exists():
                raise FileNotFoundError(f"Could not find local module: {resolved}")
            elif not resolved.is_file():
                raise IsADirectoryError(f"Local module must be a file: {resolved}")
            else:
                for path in local_deps.real_pkgs:
                    if resolved.is_relative_to(path):
                        container_path = (
                            pathlib.Path("/deps")
                            / path.name
                            / resolved.relative_to(path)
                        )
                        module_str = container_path.as_posix()
                        break
                else:
                    for faux_pkg, (_, destpath) in local_deps.faux_pkgs.items():
                        if resolved.is_relative_to(faux_pkg):
                            container_subpath = resolved.relative_to(faux_pkg)
                            # Construct the final path, ensuring POSIX style
                            module_str = f"{destpath}/{container_subpath.as_posix()}"

View on GitHub (pinned to 38031739e5)

When it happens

Trigger: Thrown at libs/cli/langgraph_cli/config.py:895 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/c5fb241f3e163807. Report an issue: GitHub.