KNN search query format changed in elasticsearch 8.17.0?

[yp05327]

🐛 Describe the bug

elasticsearch.BadRequestError: BadRequestError(400, 'x_content_parse_exception', '[1:80] [knn] unknown field [vector]')

I got this error when exec add memory function.
I'm using the latest version 8.17.0.

According to the document about knn search in elasticsearch. It seems that the format of search query has been changed?

The search query in mem0:

mem0/mem0/vector_stores/elasticsearch.py

Lines 127 to 128 in 80c9c6a

	# KNN vector search
	{"knn": {"vector": {"vector": query, "k": limit}}},

I change the query into:

"knn": {
    "field": "embedding",
    "query_vector":  query,
    "k": limit
}

Then it worked.