Unable to send Error level logs to elasticsearch

Question

I am new to fluentd and I am using 2 .conf file 1 for aggregator and 1 for forwarder. I want to send only error level logs to elasticsearch but even after using the @loglevel error. It still showing me info level logs to elasticsearch. I am adding the conf files as there can be misconfiguration in the conf files.

----> aggregator.conf <------

<match fluent.**>
  @type null
</match>

<source>
  @type http
  port 9880
</source>

<match fluentd.healthcheck>
  @type stdout
</match>

<source>
  @type tail
  @id in_tail_container_logs
  path /var/log/containers/*.log
  exclude_path ["/var/log/containers/fluentd*"]
  pos_file /var/log/fluentd-containers.log.pos
  tag kubernetes.*
  read_from_head true
  format /^(?<time>.+) (?<stream>stdout|stderr)( (?<logtag>.))? (?<message>.*)$/
  time_format %Y-%m-%dT%H:%M:%S.%L%z
</source>


<match **>
  @type forward
  <server>
    host fluentd-0.fluentd-headless.infra-fluentd.svc.cluster.local
    port 24224
  </server>

  <buffer>
    @type file
    path /opt/bitnami/fluentd/logs/buffers/logs.buffer
    flush_thread_count 2
    flush_interval 5s
  </buffer>
</match>

-----> forwarder.conf <-----

<source>
  @type prometheus
  port 24231
</source>


<source>
  @type prometheus_monitor
  <labels>
    host ${hostname}
  </labels>
</source>


<source>
  @type prometheus_output_monitor
  <labels>
    host ${hostname}
  </labels>
</source>


<match fluent.**>
  @type null
</match>


<source>
  @type forward
  bind 0.0.0.0
  port 24224
</source>

<source>
  @type http
  bind 0.0.0.0
  port 9880
</source>


<match fluentd.healthcheck>
  @type stdout
</match>

<filter kubernetes.**>
  @type kubernetes_metadata
</filter>

<match **>
  @type elasticsearch
  include_tag_key true
  host "#{ENV['ELASTICSEARCH_HOST']}"
  port "#{ENV['ELASTICSEARCH_PORT']}"
  logstash_format true

  <buffer>
    @type file
    path /opt/bitnami/fluentd/logs/buffers/logs.buffer
    flush_thread_count 2
    flush_interval 5s
  </buffer>
</match>