# LangSmithNotFoundError

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/utils/LangSmithNotFoundError)

Couldn't find the requested resource.

## Signature

```python
LangSmithNotFoundError()
```

## Extends

- `LangSmithError`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/11093852f2fe7b4fc63b88565da37d6cb796bcda/python/langsmith/utils.py#L66)