OpenBMB/ChatDev · error · DesignError

Design validation failed for

Error message

Design validation failed for '{config_path}':
{formatted}

What it means

500 returned by the Vue graph content save endpoint when persisting the graph file raises an unexpected exception. The original error and filename are logged as 'Failed to persist Vue graph content' before this generic detail is returned.

Solutions

1. Check server logs for the underlying error string tied to your filename.
2. Ensure the Vue graphs storage directory exists and is writable.
3. Retry after fixing permissions/disk; if persistent, inspect the persistence service for bugs.

catch (e) { if (e.status === 500) queueForRetryLater(); }

When it happens

Trigger: POST graph content where the write fails: read-only directory, disk full, invalid derived path, or serialization bug in the persistence layer.

Common situations: Deployments where the graphs directory isn't writable by the server process; container volume mount issues; concurrent writes corrupting state.

Understand the failure class

Background: "failed to write file", "Could not save figure", "Error saving remote file" — file write failed: causes and fixes across languages and libraries — this error's family across 38 libraries.

Related errors

• Design parsing failed for
• YAML root must be a mapping
• Workflow logical issues detected for
• 1
• 1

AI-assisted analysis of OpenBMB/ChatDev@4fb2db0ea9 (2026-08-27). Data as JSON: /api/errors/9d49651c54016062. Report an issue: GitHub.

Appendix: source

Thrown at check/check.py:79

        raw_data = read_yaml(config_path)
    except FileNotFoundError as exc:
        raise DesignError(f"Design file not found: {config_path}") from exc

    if not isinstance(raw_data, dict):
        raise DesignError("YAML root must be a mapping")

    if vars_override:
        merged_vars = dict(raw_data.get("vars") or {})
        merged_vars.update(vars_override)
        raw_data = dict(raw_data)
        raw_data["vars"] = merged_vars

    data = prepare_design_mapping(raw_data, source=str(config_path))

    schema_errors = validate_design(data, set_defaults=set_defaults, fn_module_ref=fn_module)
    if schema_errors:
        formatted = "\n".join(f"- {err}" for err in schema_errors)
        raise DesignError(f"Design validation failed for '{config_path}':\n{formatted}")

    try:
        design = DesignConfig.from_dict(data, path="root")
    except ConfigError as exc:
        raise DesignError(f"Design parsing failed for '{config_path}': {exc}") from exc

    logic_errors = check_workflow_structure(data)
    if logic_errors:
        formatted = "\n".join(f"- {err}" for err in logic_errors)
        raise DesignError(f"Workflow logical issues detected for '{config_path}':\n{formatted}")
    else:
        print("Workflow OK.")

    graph = data.get("graph") or {}
    _ensure_supported(graph)

    return design

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