This errors occurs when adding this extension: QueryDepthLimiter in the schema:

tearDown
...
File "/usr/local/lib/python3.9/copy.py", line 161, in deepcopy
    rv = reductor(4)
  File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 94, in __reduce_ex__
    raise PicklingError(f"Cannot pickle {self.__class__.__qualname__}.")
_pickle.PicklingError: Cannot pickle ResolverMatch.

import strawberry
from strawberry.extensions import  QueryDepthLimiter

schema = strawberry.Schema(
    query=Query,
    mutation=Mutation,
    extensions=[
        QueryDepthLimiter(max_depth=10)
    ],
)

class BaseTestCase(TestCase):
    @classmethod
    def setUpTestData(cls):
        super().setUpTestData()
        cls._client = APIClient(schema=schema)

 def tearDown(self):
        self._client.logout()

is this a known issue?

with thanks