Prometheus cannot scrape from prometheus-exporter-plugin-for-opensearch

[Leo]

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
OpenSearch 2.9.0
Plugin Version 2.9.0

Describe the issue:
I have installed opensearch plugin prometheus-exporter-plugin-for-opensearch
I cannot see metrics from curl and prometheus does not scrape metrics.
Let me know how can i solve the problem

Metrics are directly available at:
http(s)://{opensearch-host}:9200/_prometheus/metrics
Is it right? {opensearch-host} = opensearch-cluster-master.{namespace}.{cluster}

Configuration:

1. Opensearch
   plugins:
   enabled: true
   installList:

• “https://github.com/aiven/prometheus-exporter-plugin-for-opensearch/releases/download/2.9.0.0/prometheus-exporter-2.9.0.0.zip”

2. Prometheus

• job_name: opensearch
  scrape_interval: 10s
  metrics_path: “/_prometheus/metrics”
  static_configs:
  • targets:
    • opensearch-host:9200

Relevant Logs or Screenshots:

Prometheus Error
Get “http://{opensearch-host}:9200/_prometheus/metrics”: EOF