LangChain service doesn't work

[suzukyz]

Issue Report

LangChain service on ECS/Fargete doesn't work when we use Rinna.
Because LangChain module path was changed.

Expected Behavior

LangChain service and SPA work.

Actual Behavior

LangChain service works incorrectly. Also SPA doesn't be loaded.

Steps to Reproduce the Issue

Deploy with Rinna.

How to fix

In jp-rag-sample/amplify/backend/api/fargate/src/langchain/app/chain/rinna.py

Current source code:

L7: from langchain import SagemakerEndpoint

Fixed source code:

L7: from langchain.llm import SagemakerEndpoint

Related issue:

• https://stackoverflow.com/questions/77191535/langchain-root-module-no-longer-supported

Related docs:

• https://python.langchain.com/docs/integrations/llms/sagemaker#example

[ysekiy]

#29