Passing two lists to celery but getting Kombu Type error , set is not Json serializable

[WishyBoii]

I have a task A which takes in a list of ids as input , checks if the list of ids is a list instance of length greater than 0 , does some operation and then passes that list to another task. I have Kombu version 5.2.4.
The second task however gives out an error like so:
Task_name: atg.tasks.scrape_and_update_products
Task uuid: 2b279bea-ee0f-40f9-9a41-b4a9bec96f9c
Task args: "([5311959], ['meesho.com'])"
Task kwargs: "{}"
Task results: {"exc_type": "EncodeError", "exc_message": ["TypeError('Object of type set is not JSON serializable')"], "exc_module": "kombu.exceptions"}
Traceback: Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/serialization.py", line 39, in _reraise_errors
yield
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/serialization.py", line 210, in dumps
payload = encoder(data)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/utils/json.py", line 68, in dumps
return _dumps(s, cls=cls or _default_encoder,
File "/usr/lib/python3.8/json/init.py", line 234, in dumps
return cls(
File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/utils/json.py", line 58, in default
return super().default(o)
File "/usr/lib/python3.8/json/encoder.py", line 179, in default
raise TypeError(f'Object of type {o.class.name} '
TypeError: Object of type set is not JSON serializable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.8/site-packages/celery/app/trace.py", line 518, in trace_task
task.backend.mark_as_done(
File "/home/ubuntu/.local/lib/python3.8/site-packages/celery/backends/base.py", line 162, in mark_as_done
self.store_result(task_id, result, state, request=request)
File "/home/ubuntu/.local/lib/python3.8/site-packages/celery/backends/base.py", line 528, in store_result
self._store_result(task_id, result, state, traceback,
File "/home/ubuntu/.local/lib/python3.8/site-packages/django_celery_results/backends/database.py", line 67, in _store_result
content_type, content_encoding, result = self.encode_content(result)
File "/home/ubuntu/.local/lib/python3.8/site-packages/django_celery_results/backends/database.py", line 144, in encode_content
content_type, content_encoding, content = self._encode(data)
File "/home/ubuntu/.local/lib/python3.8/site-packages/celery/backends/base.py", line 422, in _encode
return dumps(data, serializer=self.serializer)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/serialization.py", line 210, in dumps
payload = encoder(data)
File "/usr/lib/python3.8/contextlib.py", line 131, in exit
self.gen.throw(type, value, traceback)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/serialization.py", line 43, in _reraise_errors
reraise(wrapper, wrapper(exc), sys.exc_info()[2])
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/exceptions.py", line 21, in reraise
raise value.with_traceback(tb)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/serialization.py", line 39, in _reraise_errors
yield
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/serialization.py", line 210, in dumps
payload = encoder(data)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/utils/json.py", line 68, in dumps
return _dumps(s, cls=cls or _default_encoder,
File "/usr/lib/python3.8/json/init.py", line 234, in dumps
return cls(
File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/ubuntu/.local/lib/python3.8/site-packages/kombu/utils/json.py", line 58, in default
return super().default(o)
File "/usr/lib/python3.8/json/encoder.py", line 179, in default

[WishyBoii]

It was my issue , the celery task was returning a set due to a faulty dict comprehension. Not a celery issue