Celery with redis: instance state changed (master -> replica?)

Am using celery for scheduled tasks and redis server for data backup within docker containers. My jobs are running correctly sometimes. But I am get following error randomly and celery beat task can no longer progress.

[2020-09-16 21:01:07,863: CRITICAL/MainProcess] Unrecoverable error: ResponseError('UNBLOCKED force unblock from blocking operation, instance sta
te changed (master -> replica?)',)
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/celery/worker/worker.py", line 205, in start
    self.blueprint.start(self)
  File "/usr/local/lib/python3.6/site-packages/celery/bootsteps.py", line 119, in start
    step.start(parent)
  File "/usr/local/lib/python3.6/site-packages/celery/bootsteps.py", line 369, in start
    return self.obj.start()
  File "/usr/local/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 318, in start
    blueprint.start(self)
  File "/usr/local/lib/python3.6/site-packages/celery/bootsteps.py", line 119, in start
    step.start(parent)
  File "/usr/local/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 599, in start
    c.loop(*c.loop_args())
  File "/usr/local/lib/python3.6/site-packages/celery/worker/loops.py", line 83, in asynloop
    next(loop)
  File "/usr/local/lib/python3.6/site-packages/kombu/asynchronous/hub.py", line 364, in create_loop
    cb(*cbargs)
  File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 1088, in on_readable
    self.cycle.on_readable(fileno)
  File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 359, in on_readable
    chan.handlers[type]()
  File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 739, in _brpop_read
    **options)
  File "/usr/local/lib/python3.6/site-packages/redis/client.py", line 892, in parse_response
    response = connection.read_response()
  File "/usr/local/lib/python3.6/site-packages/redis/connection.py", line 752, in read_response
    raise response
redis.exceptions.ResponseError: UNBLOCKED force unblock from blocking operation, instance state changed (master -> replica?)

Any help is will be appreciated. Let me know in case you need more details