Logstash shuts down after setting offset for kafka partition

this is logstash.conf

input {
  kafka {
    bootstrap_servers => "kafka-app-logs:9092"
    topics => ["pm2-logs"]
    codec => multiline {
      pattern => "^\s"
      what => "previous"
    }
  }
}

filter {
  mutate {
    gsub => [ "message", "\n", " " ]
  }
}

output {
    elasticsearch {
     hosts => "app-logs.local:9200"
     index => "pm2-logs"
   }
}

this are the logs:

Pipeline started {"pipeline.id"=>"main"}
Pipelines running {:count=>1, :running_pipelines=>[:main], :non_running_pipelines=>[]}
ConsumerConfig values: 
	allow.auto.create.topics = true
	auto.commit.interval.ms = 5000
	auto.offset.reset = latest
	bootstrap.servers = [kafka-app-logs.local:9092]
	check.crcs = true
	client.dns.lookup = default
	client.id = logstash-0
	client.rack = 
	connections.max.idle.ms = 540000
	default.api.timeout.ms = 60000
	enable.auto.commit = true
	exclude.internal.topics = true
	fetch.max.bytes = 52428800
	fetch.max.wait.ms = 500
	fetch.min.bytes = 1
	group.id = logstash
	group.instance.id = null
	heartbeat.interval.ms = 3000
	interceptor.classes = []
	internal.leave.group.on.close = true
	isolation.level = read_uncommitted
	key.deserializer = class org.apache.kafka.common.serialization.StringDeserializer
	max.partition.fetch.bytes = 1048576
	max.poll.interval.ms = 300000
	max.poll.records = 500
	metadata.max.age.ms = 300000
	metric.reporters = []
	metrics.num.samples = 2
	metrics.recording.level = INFO
	metrics.sample.window.ms = 30000
	partition.assignment.strategy = [class org.apache.kafka.clients.consumer.RangeAssignor]
	receive.buffer.bytes = 65536
	reconnect.backoff.max.ms = 1000
	reconnect.backoff.ms = 50
	request.timeout.ms = 30000
	retry.backoff.ms = 100
	sasl.client.callback.handler.class = null
	sasl.jaas.config = null
	sasl.kerberos.kinit.cmd = /usr/bin/kinit
	sasl.kerberos.min.time.before.relogin = 60000
	sasl.kerberos.service.name = null
	sasl.kerberos.ticket.renew.jitter = 0.05
	sasl.kerberos.ticket.renew.window.factor = 0.8
	sasl.login.callback.handler.class = null
	sasl.login.class = null
	sasl.login.refresh.buffer.seconds = 300
	sasl.login.refresh.min.period.seconds = 60
	sasl.login.refresh.window.factor = 0.8
	sasl.login.refresh.window.jitter = 0.05
	sasl.mechanism = GSSAPI
	security.protocol = PLAINTEXT
	send.buffer.bytes = 131072
	session.timeout.ms = 10000
	ssl.cipher.suites = null
	ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
	ssl.endpoint.identification.algorithm = https
	ssl.key.password = null
	ssl.keymanager.algorithm = SunX509
	ssl.keystore.location = null
	ssl.keystore.password = null
	ssl.keystore.type = JKS
	ssl.protocol = TLS
	ssl.provider = null
	ssl.secure.random.implementation = null
	ssl.trustmanager.algorithm = PKIX
	ssl.truststore.location = null
	ssl.truststore.password = null
	ssl.truststore.type = JKS
	value.deserializer = class org.apache.kafka.common.serialization.StringDeserializer
Kafka version: 2.3.0
Kafka commitId: fc1aaa116b661c8a
Kafka startTimeMs: 1592213391234
 Subscribed to topic(s): pm2-logs
 Successfully started Logstash API endpoint {:port=>9600}
 Cluster ID: RVTI2y7EStiP-FCfnWxyDg
Discovered group coordinator 10.122.25.33:9092 (id: 2147482645 rack: null)
Revoking previously assigned partitions []
(Re-)joining group
Successfully joined group with generation 1958
Setting newly assigned partitions: pm2-logs-3, pm2-logs-4, pm2-logs-5
Setting offset for partition pm2-logs-4 to the committed offset FetchPosition{offset=5854066771, offsetEpoch=Optional.empty, currentLeader=LeaderAndEpoch{leader=10.122.41.58:9092 (id: 1003 rack: null), epoch=-1}}
Setting offset for partition pm2-logs-5 to the committed offset FetchPosition{offset=5834136277, offsetEpoch=Optional.empty, currentLeader=LeaderAndEpoch{leader=10.122.21.204:9092 (id: 1005 rack: null), epoch=-1}}
Setting offset for partition pm2-logs-3 to the committed offset FetchPosition{offset=5834144120, offsetEpoch=Optional.empty, currentLeader=LeaderAndEpoch{leader=10.122.4.64:9092 (id: 1002 rack: null), epoch=-1}}
Attempt to heartbeat failed since group is rebalancing
Revoking previously assigned partitions [pm2-logs-3, pm2-logs-4, pm2-logs-5]
(Re-)joining group
Successfully joined group with generation 1959
Setting newly assigned partitions: pm2-logs-4, pm2-logs-5
Setting offset for partition pm2-logs-4 to the committed offset FetchPosition{offset=5854984158, offsetEpoch=Optional.empty, currentLeader=LeaderAndEpoch{leader=10.122.41.58:9092 (id: 1003 rack: null), epoch=-1}}
Setting offset for partition pm2-logs-5 to the committed offset FetchPosition{offset=5835053664, offsetEpoch=Optional.empty, currentLeader=LeaderAndEpoch{leader=10.122.21.204:9092 (id: 1005 rack: null), epoch=-1}}
SIGTERM received. Shutting down.
Member logstash-0-e9db9bb6-c663-4f38-9a3e-d3ae1804b00c sending LeaveGroup request to coordinator 10.122.4.46:9092 (id: 2147482645 rack: null)
Pipeline terminated {"pipeline.id"=>"main"}
Logstash shut down.

can you please help me with what could be the issue?
i am using this config to get logs from kafka to elasticsearch with codec multiline plugin, and it is working with same config for another logstash server

Hi @Aliasgar_Choolawala - Welcome to our community forums!

Your team has reached out to Elastic Support and we will be working with you via the support case.

Thank you.