# ListenerRequiredError

> **Class** in `langgraph_cli`

📖 [View in docs](https://reference.langchain.com/python/langgraph-cli/deploy/ListenerRequiredError)

## Signature

```python
ListenerRequiredError(
    self,
    remedy: str,
)
```

## Extends

- `click.UsageError`

## Constructors

```python
__init__(
    self,
    remedy: str,
) -> None
```

| Name | Type |
|------|------|
| `remedy` | `str` |


---

[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/8a77332d0db75c49d296b1f3833a3a5ccd5f0dc8/libs/cli/langgraph_cli/deploy.py#L1539)