langchain-ai/langgraph · error · ValueError

Invalid encryption.path format: '{encryption_conf['path']}'.

Error message

Invalid encryption.path format: '{encryption_conf['path']}'. Must be in format './path/to/file.py:attribute_name'

What it means

Error "Invalid encryption.path format: '{encryption_conf['path']}'. Must be in format './path/to/file.py:attribute_name'" thrown in langchain-ai/langgraph.

Source

Thrown at libs/cli/langgraph_cli/config.py:533

    if legacy_project_root or legacy_package:
        raise click.UsageError(
            "Top-level `project_root` and `package` are no longer supported. "
            "Use `source.root` and `source.package` instead."
        )

    # Validate auth config
    if auth_conf := config.get("auth"):
        if "path" in auth_conf:
            if ":" not in auth_conf["path"]:
                raise ValueError(
                    f"Invalid auth.path format: '{auth_conf['path']}'. "
                    "Must be in format './path/to/file.py:attribute_name'"
                )
    # Validate encryption config
    if encryption_conf := config.get("encryption"):
        if "path" in encryption_conf:
            if ":" not in encryption_conf["path"]:
                raise ValueError(
                    f"Invalid encryption.path format: '{encryption_conf['path']}'. "
                    "Must be in format './path/to/file.py:attribute_name'"
                )
    if http_conf := config.get("http"):
        if "app" in http_conf:
            if ":" not in http_conf["app"]:
                raise ValueError(
                    f"Invalid http.app format: '{http_conf['app']}'. "
                    "Must be in format './path/to/file.py:attribute_name'"
                )
    if keep_pkg_tools := config.get("keep_pkg_tools"):
        if isinstance(keep_pkg_tools, list):
            for tool in keep_pkg_tools:
                if tool not in _BUILD_TOOLS:
                    raise ValueError(
                        f"Invalid keep_pkg_tools: '{tool}'. "
                        "Must be one of 'pip', 'setuptools', 'wheel'."
                    )

View on GitHub (pinned to 38031739e5)

When it happens

Trigger: Thrown at libs/cli/langgraph_cli/config.py:533 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/1c66a8bd4fc39e90. Report an issue: GitHub.