%4|1560006005.731|COMMITFAIL|rdkafka#consumer-20| [thrd:main]: Offset commit (manual) failed for 1/1 partition(s): Broker: Unknown member: commands[0]@1(Broker: Unknown member)

        consumer:
            dsn: "..."
            global:
                ### Make sure this is unique for each application / consumer group and does not change
                ### Otherwise, Kafka won't be able to track your last offset and will always start according to
                ### `auto.offset.reset` setting.
                ### See Kafka documentation regarding `group.id` property if you want to know more
                group.id: 'backend'
                metadata.broker.list: '...'
                security.protocol: sasl_ssl
                ssl.ca.location: '%kernel.project_dir%/config/kafka/ca.pem'
                sasl.username: '...'
                sasl.password: '...'
                sasl.mechanisms: "SCRAM-SHA-256"
                max.poll.interval.ms: '25000'
                enable.auto.commit: 'false'
                enable.auto.offset.store: 'false'
            topic:
                auto.offset.reset: beginning
            ### Commit async is true by default since version 0.9.9.
            ### It is suggested to set it to true in earlier versions since otherwise consumers become extremely slow,
            ### waiting for offset to be stored on Kafka before continuing.
            commit_async: true