Problem with @timestamp time in indexes

Elastic Stack Beats
20 
filebeat.inputs:

- type: log
  enabled: true
  json.keys_under_root: true
  paths:
    - /var/log/report-generator/report-generator.log

#================================ Outputs =====================================

# Configure what outputs to use when sending the data collected by the beat.
# Multiple outputs may be used.

#-------------------------- Elasticsearch output ------------------------------
output.elasticsearch:
  # Array of hosts to connect to.
  hosts: ["elk.trendhero.io:9200"]
  index: "trendhero-%{+yyyy.MM.dd}"

  # Optional protocol and basic auth credentials.
  protocol: "https"
  username: "elastic"
  password: "REMOVED"

setup.template:
  name: 'trendhero'
  pattern: 'trendhero-*'
  enabled: false

setup.ilm.enabled: auto
setup.ilm.rollover_alias: "trendhero"
setup.ilm.pattern: "{now/d}-000001"

logging.level: info

processors:
 - drop_event:
       when:
           not:
               equals:
                   exportable: true