consume message error

[lonycc]

consumer = KafkaConsumer(
    'topic-yunan',
    group_id = "consumer-yunan",
    bootstrap_servers = ['127.0.0.1:50003'],
    api_version = (1, 1),

    security_protocol = "SASL_SSL",
    sasl_mechanism = "PLAIN",
    sasl_plain_username = "username",
    sasl_plain_password = "password",
    ssl_cafile = "CARoot.pem",
    ssl_check_hostname = False,
)

for message in consumer:
    print("Topic:[%s] Partition:[%d] Offset:[%d] Value:[%s]" % (message.topic, message.partition, message.offset, message.value))

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/consumer/group.py", line 1197, in __next__
    return self.next_v2()
           ^^^^^^^^^^^^^^
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/consumer/group.py", line 1205, in next_v2
    return next(self._iterator)
           ^^^^^^^^^^^^^^^^^^^^
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/consumer/group.py", line 1120, in _message_generator_v2
    record_map = self.poll(timeout_ms=timeout_ms, update_offsets=False)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/consumer/group.py", line 657, in poll
    records = self._poll_once(remaining, max_records, update_offsets=update_offsets)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/consumer/group.py", line 679, in _poll_once
    self._coordinator.poll()
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/coordinator/consumer.py", line 289, in poll
    self.ensure_active_group()
  File "/home/tony/mixed/py/myvenv/lib/python3.12/site-packages/kafka/coordinator/base.py", line 425, in ensure_active_group
    raise exception  # pylint: disable-msg=raising-bad-type
    ^^^^^^^^^^^^^^^
kafka.errors.UnknownError: [Error -1] UnknownError