Fixes #

---

<!-- Keep the `Fixes #xx` keyword at the very top and update the issue number — this auto-closes the issue on merge. Replace this comment with a 1-2 sentence description of your change. No `# Summary` header; the description is the summary. -->

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> **All contributions must be in English.** See the [language policy](https://docs.langchain.com/oss/python/contributing/overview#language-policy).

If you paste a large clearly AI generated description here your PR may be IGNORED or CLOSED!

Thank you for contributing to LangChain! Follow these steps to have your pull request considered as ready for review.

1. PR title: Should follow the format: TYPE(SCOPE): DESCRIPTION

  - Examples:
    - fix(anthropic): resolve flag parsing error
    - feat(core): add multi-tenant support
    - test(openai): update API usage tests
  - Allowed TYPE and SCOPE values: https://github.com/langchain-ai/langchain/blob/master/.github/workflows/pr_lint.yml#L15-L33

2. PR description:

  - Write 1-2 sentences that make the change easy to understand: who benefits, what problem they had, and how this solves it. Prefer a simple user story over a long summary.
  - The `Fixes #xx` line at the top is **required** for external contributions — update the issue number and keep the keyword. This links your PR to the approved issue and auto-closes it on merge.
  - If there are any breaking changes, please clearly describe them.
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3. Run `make format`, `make lint` and `make test` from the root of the package(s) you've modified.

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4. How did you verify your code works?

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