Kafka attempt rediscovery never happen

Hello fellow Kafka users,

I've been trying to understand what happened to one of my Consumers but
with no luck so far, but maybe someone could help me with some insight.

I got these lines on the logs

│ 20:43:43,909 INFO com.mms.logic [] -
Successfully consumed message.
correlationId=ce62d95e-09e4-4f8f-b166-5193d582733b topic=nj_topic
partition=2 offset=371360
│ 20:43:55,281 ERROR
org.apache.kafka.clients.consumer.internals.ConsumerCoordinator [] -
[Consumer clientId=consumer-mms-1, groupId=mms] Offset commit failed on
partition nj_topic-2 at offset 371361: The coordinator is not aware of this
member.
│ 20:43:55,282 INFO
org.apache.kafka.clients.consumer.internals.ConsumerCoordinator [] -
[Consumer clientId=consumer-mms-1, groupId=mms] OffsetCommit failed with
Generation{generationId=17,
memberId='consumer-mms-1-c69e919b-2719-42cf-bf76-687fb1b0ea18',
protocol='range'}: The coordinator is not aware of this member.
│ 20:43:55,281 INFO
org.apache.kafka.clients.consumer.internals.AbstractCoordinator [] -
[Consumer clientId=consumer-mms-1, groupId=mms] Group coordinator
njss1.env.net:9092 (id: 2147483646 rack: null) is unavailable or invalid,
will attempt rediscovery

After this nothing else is logged, no actual attempt to rediscover the
coordinator and rejoin is made but I still get a response from the webping
endpoint of the service which is running the consumer, meaning the service
did not go down but the consumer for some reason did not retry to commit
the offset.

Any ideas?

Regards
Antonio