Data path already locked by another beat

Elastic Stack Beats
3

filebeat.logstash.yml

filebeat.registry.path: registry.logstash

processors:
- add_host_metadata:
    netinfo.enabled: true

filebeat.inputs:
- type              : log
  enabled           : true
  exclude_files     : ['.gz$']
  fields_under_root : true
  tags              : ["zimbra"]
  paths:
    - /opt/zimbra/log/access_log.*
    - /opt/zimbra/log/audit.log
    - /opt/zimbra/log/mailbox.log
    - /opt/zimbra/log/nginx.log
    - /opt/zimbra/log/nginx.access.log
    - /opt/zimbra/log/sync.log
    - /var/log/zimbra.log

output.logstash:
  hosts             : elastic-zmb-pool
  loadbalance       : true