Logstash errors after upgrading to filebeat-6.3.0

Elastic Stack Beats
6

In order to avoid it on the LS side

  # Remove host metadata                                                                                      
    mutate {
      remove_field => [ "[host][name]" ]
      remove_field => [ "[host][id]" ]
      remove_field => [ "[host][architecture]" ]
      remove_field => [ "[host][os][platform]" ]
      remove_field => [ "[host][os][version]" ]
      remove_field => [ "[host][os][family]" ]
      remove_field => [ "[host][ip]" ]
      remove_field => [ "[host][mac]" ]
      remove_field => [ "[host][os]" ]
      remove_field => [ "[host]" ]
    }
    mutate {
      add_field => {
    	"host" => "%{[beat][hostname]}"
      }
    }