Create_stuff_documents_chain is not working with latest version of langchain(Version: 1.0.3)

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1

When I tried to import create_stuff_documents_chain, I’m getting the error ModuleNotFoundError: No module named ‘langchain.chains’. Please help me to resolve. I’m using the latest version of langchain
(Version: 1.0.3)

Note: I have included below libs in requirements file

langchain

python-dotenv

langchain-openai

langchain-core

langchain-community

bs4

faiss-cpu

from langchain.chains.combine_documents import create_stuff_documents_chain

ModuleNotFoundError Traceback (most recent call last)
Cell In[11], line 1
----> 1 from langchain.chains.combine_documents import create_stuff_documents_chain

ModuleNotFoundError: No module named ‘langchain.chains’

1 Like
2

In LangChain 1.0, the langchain.chains module has been moved to the langchain-classic package.

To fix your error:

  1. Install langchain-classic:

    pip install langchain-classic

  2. Update your import:

    from langchain_classic.chains.combine_documents import create_stuff_documents_chain

Note: LangChain 1.0 recommends using create_agent instead of legacy chains for new projects. Legacy chains are maintained in langchain-classic for backward compatibility.

Check the RAG guide for current beste practices

3 Likes
4

For LangChain.js

In version 1.0, the langchain.chains module is moved to langchain/classic.

To fix it:

  1. Install the package:
npm i @langchain/classic
  1. Import:
import { createStuffDocumentsChain } from "@langchain/classic/chains/combine_documents";