ApiError(406, 'Content-Type header [application/vnd.elasticsearch+json; compatible-with=8] is not supported', 'Content-Type header [application/vnd.elasticsearch+json; compatible-with=8] is not supported')

[raghuldeva]

Checked other resources

• I added a very descriptive title to this question.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.

Commit to Help

• I commit to help with one of those options 👆

Example Code

from langchain_community.vectorstores.elasticsearch import ElasticsearchStore
from elasticsearch import Elasticsearch

es_client = Elasticsearch(
    ["https://my_url:443"],
    bearer_auth=("elastic","password"),
    verify_certs=True
)

db1 = ElasticsearchStore(
    index_name="index1",
    es_connection=es_client,
    embedding=embeddings
)

Description

I've created Elastic search instance and accessing it in ElasticsearchStore, in Fast API, There is no error while initializing the elasticsearch or elasticsearchStore, When I'm trying to hit using fast api endpoint , I'm getting

ApiError(406, 'Content-Type header [application/vnd.elasticsearch+json; compatible-with=8] is not supported', 'Content-Type header [application/vnd.elasticsearch+json; compatible-with=8] is not supported')

System Info

python == 3.12.0
elastic-transport == 8.10.0
elasticsearch == 8.10.0
langchain == 0.1.11
langchain-community == 0.0.25
langchain-core == 0.1.29
fastapi == 0.104.1

[dosubot[bot]]

Hey there, @raghuldeva! Fancy seeing you here again. 😄 I hope you've been doing well since our last adventure. I'm diving into your issue now and will get back to you with a detailed response shortly. Hang tight!

[seohyunjun]

This issue occurs because the version of Elasticsearch you are using is outdated. Due to a split between Elasticsearch and OpenSearch, it has become necessary to include the version information in the request headers. To resolve this issue, you should either downgrade your Elasticsearch version to 7 or lower, or downgrade the elasticsearch-py module version.