Ruby exception occurred: can't convert Array into an exact number about fortinet-2-elasticsearch HOT 4 OPEN

[2023-10-19T15:01:59,508][INFO ][logstash.filters.geoip   ][syslog-fortinet-common_ecs-output] Using geoip database {:path=>"/var/lib/logstash/plugins/filters/geoip/1697699465/GeoLite2-City.mmdb"}
[2023-10-19T15:01:59,537][INFO ][logstash.filters.geoip.databasemanager][syslog-fortinet-common_ecs-output] By not manually configuring a database path with `database =>`, you accepted and agreed MaxMind EULA. For more details please visit https://www.maxmind.com/en/geolite2/eula
[2023-10-19T15:01:59,538][INFO ][logstash.filters.geoip   ][syslog-fortinet-common_ecs-output] Using geoip database {:path=>"/var/lib/logstash/plugins/filters/geoip/1697699465/GeoLite2-City.mmdb"}
[2023-10-19T15:01:59,663][INFO ][logstash.javapipeline    ][syslog-fortinet-common_ecs-output] Starting pipeline {:pipeline_id=>"syslog-fortinet-common_ecs-output", "pipeline.workers"=>2, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>50, "pipeline.max_inflight"=>250, "pipeline.sources"=>["/etc/logstash/conf.d/syslog-fortinet-common_ecs-output.conf"], :thread=>"#<Thread:0x72340c64@/usr/share/logstash/logstash-core/lib/logstash/pipeline_action/create.rb:53 run>"}
[2023-10-19T15:01:59,885][WARN ][org.logstash.plugins.pipeline.PipelineBus][syslog-fortinet-fortigate_2_ecsv2][29a6aa27ca7002ac905931a3f66296c9a559f80ec562f0a6bc6cce6e7d356a3a] Attempted to send event to 'syslog-fortinet-common_ecs-output' but that address was unavailable. Maybe the destination pipeline is down or stopping? Will Retry.
[2023-10-19T15:02:00,530][INFO ][logstash.javapipeline    ][syslog-fortinet-common_ecs-output] Pipeline Java execution initialization time {"seconds"=>0.86}
[2023-10-19T15:02:00,546][INFO ][logstash.javapipeline    ][syslog-fortinet-common_ecs-output] Pipeline started {"pipeline.id"=>"syslog-fortinet-common_ecs-output"}
[2023-10-19T15:02:00,612][INFO ][logstash.agent           ] Pipelines running {:count=>3, :running_pipelines=>[:"syslog-fortinet-fortigate-input5424-kv", :"syslog-fortinet-fortigate_2_ecsv2", :"syslog-fortinet-common_ecs-output"], :non_running_pipelines=>[]}
[2023-10-19T15:02:00,885][WARN ][org.logstash.plugins.pipeline.PipelineBus][syslog-fortinet-fortigate_2_ecsv2][29a6aa27ca7002ac905931a3f66296c9a559f80ec562f0a6bc6cce6e7d356a3a] Attempted to send event to 'syslog-fortinet-common_ecs-output' but that address was unavailable. Maybe the destination pipeline is down or stopping? Will Retry.

/usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/syslog-fortinet-common_ecs-output.conf -r

input {
    udp {
        port => 5141
        buffer_size => 131072
#
        add_field => {"[data_stream][type]" => "logs"}
        add_field => {"[data_stream][dataset]" => "fortinet.fortigate"}
        add_field => {"[data_stream][namespace]" => "default"}
#
        source_ip_fieldname => "[observer][ip]"
        add_field => { "[logstash][hostname]" => "${HOSTNAME:no_logstash_hostname}" }
        #tags => [ "fortianalyzer" ]
    }
}