langchain-ai/langgraph · error · ValueError

Module '{import_str}' not found in 'dependencies' list. Add

Error message

Module '{import_str}' not found in 'dependencies' list. Add its containing package to 'dependencies' list.

What it means

Error "Module '{import_str}' not found in 'dependencies' list. Add its containing package to 'dependencies' list." thrown in langchain-ai/langgraph.

Source

Thrown at libs/cli/langgraph_cli/config.py:916

            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()}"
                            break
                    else:
                        raise ValueError(
                            f"Module '{import_str}' not found in 'dependencies' list. "
                            "Add its containing package to 'dependencies' list."
                        )
            # update the config
            if isinstance(data, dict):
                config["graphs"][graph_id]["path"] = f"{module_str}:{attr_str}"
            else:
                config["graphs"][graph_id] = f"{module_str}:{attr_str}"


def _update_auth_path(
    config_path: pathlib.Path, config: Config, local_deps: LocalDeps
) -> None:
    """Update auth.path to use Docker container paths."""
    auth_conf = config.get("auth")
    if not auth_conf or not (path_str := auth_conf.get("path")):
        return

View on GitHub (pinned to 38031739e5)

When it happens

Trigger: Thrown at libs/cli/langgraph_cli/config.py:916 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/dd8d852a7bb50765. Report an issue: GitHub.