django-pytest raising DatabaseError in all tests

Hi,

I was using django-pytest version 3.3.2 and my tests using Django TestCase were running just fine.
Now I started a new project and decided do use the latest django-pytest version, but all my tests are raising an error related to the default database being created in one thread but used in another.

Python: 3.7.2+and 3.6.9
Django Version: 2.2.9 and 2.2
pytest Version: 5.3.2
pytest-django Version: 3.8.0
psycopg2-binary: 2.8.4 (I'm using Postgres)

pytest.ini:

[pytest]
DJANGO_SETTINGS_MODULE = data_api.settings
python_files = tests.py test_*.py *_tests.py

The error:

request = <SubRequest '_django_setup_unittest' for <TestCaseFunction test_data_insert_event_dispatched>>
django_db_blocker = <pytest_django.plugin._DatabaseBlocker object at 0x7fbe81b51550>

    @pytest.fixture(autouse=True, scope="class")
    def _django_setup_unittest(request, django_db_blocker):
        """Setup a django unittest, internal to pytest-django."""
        if not django_settings_is_configured() or not is_django_unittest(request):
            yield
            return
    
        from _pytest.unittest import TestCaseFunction
    
        if "debug" in TestCaseFunction.runtest.__code__.co_names:
            # Fix pytest (https://github.com/pytest-dev/pytest/issues/5991), only
            # if "self._testcase.debug()" is being used (forward compatible).
            from _pytest.monkeypatch import MonkeyPatch
    
            def non_debugging_runtest(self):
                self._testcase(result=self)
    
            mp_debug = MonkeyPatch()
            mp_debug.setattr("_pytest.unittest.TestCaseFunction.runtest", non_debugging_runtest)
        else:
            mp_debug = None
    
>       request.getfixturevalue("django_db_setup")

/home/mendes/.virtualenvs/data_domain/lib/python3.7/site-packages/pytest_django/plugin.py:524: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/home/mendes/.virtualenvs/data_domain/lib/python3.7/site-packages/pytest_django/fixtures.py:108: in django_db_setup
    **setup_databases_args
/home/mendes/.virtualenvs/data_domain/lib/python3.7/site-packages/django/test/utils.py:174: in setup_databases
    serialize=connection.settings_dict.get('TEST', {}).get('SERIALIZE', True),
/home/mendes/.virtualenvs/data_domain/lib/python3.7/site-packages/django/db/backends/base/creation.py:60: in create_test_db
    self.connection.close()
/home/mendes/.virtualenvs/data_domain/lib/python3.7/site-packages/django/db/backends/base/base.py:279: in close
    self.validate_thread_sharing()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <django.db.backends.postgresql.base.DatabaseWrapper object at 0x7fbe810e3a90>

    def validate_thread_sharing(self):
        """
        Validate that the connection isn't accessed by another thread than the
        one which originally created it, unless the connection was explicitly
        authorized to be shared between threads (via the `inc_thread_sharing()`
        method). Raise an exception if the validation fails.
        """
        if not (self.allow_thread_sharing or self._thread_ident == _thread.get_ident()):
            raise DatabaseError(
                "DatabaseWrapper objects created in a "
                "thread can only be used in that same thread. The object "
                "with alias '%s' was created in thread id %s and this is "
                "thread id %s."
>               % (self.alias, self._thread_ident, _thread.get_ident())
            )
E           django.db.utils.DatabaseError: DatabaseWrapper objects created in a thread can only be used in that same thread. The object with alias 'default' was created in thread id 140456219838272 and this is thread id 140456135896760.

/home/mendes/.virtualenvs/data_domain/lib/python3.7/site-packages/django/db/backends/base/base.py:547: DatabaseError

The traceback identifies pytest_django/plugin.py:524 and fixtures.py:108, with Django's setup_databases and PostgreSQL DatabaseWrapper in the call path. Reproduce using the listed Python, Django, pytest, pytest-django, and psycopg2 versions with a Django TestCase; inspect which thread creates and closes the default database connection, and consider the issue done when those tests complete without DatabaseError.