I am using Docker container for MCP server. When running my Python script to do a knn search, the server throws 400 Bad request. But when request is sent without anything inside query_body, it gives me the result. I couldn’t understand whats wrong within query_body. Please help if you can. payload …

400 Bad request

Tortoise August 27, 2025, 3:31am 2

This is duplicate to thread

Topic		Replies	Views
400-Bad request Elasticsearch docker , vector-search	2	28	August 27, 2025
Unknown key for a START_OBJECT in [knn] Elasticsearch vector-search	14	4896	December 23, 2022
Error: BadRequestError(400, 'parsing_exception', 'Unknown key for a START_OBJECT in [knn].') Elastic Search	3	1248	May 29, 2024
KNN search fails on empty index Elasticsearch vector-search	8	85	October 11, 2024
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400 Bad request

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