Get http 200 response code from sink opensearch, but contains errors

[7czl]

I encountered this issue intermittently and now it results in vector top error counter, how could I solve this?
While I am using vector as aggregator ingest the logs from kafka to opensearch.

Error info: vector::sinks::elasticsearch::service: Response contained errors. error_code="http_response_200

Any ideas would be appreciated.

[sinks.opensearch]
  type = "elasticsearch"
  inputs = [ "extract_file" ]
  api_version = "v7"
  endpoints = [ "https://localhost:9200" ]
  bulk.index = "logs-{{ index_name }}-%Y-%m"
  mode = "bulk"
  batch.max_events = 5000
  batch.max_bytes = 262144
  compression = "zstd"
  auth.strategy = "basic"
  auth.user = "vector"
  auth.password = "***"
  tls.verify_certificate = false