GenericViewSet default queryset error using model.objects.first()

[HelloMinchan]

Hello!
I am using DRF GenericViewSet for my project.

Here is my issue code!

class TestViewSet(mixins.CreateModelMixin, GenericViewSet):
    """
    # test viewset
    """

    queryset = Test.objects.first()
    serializer_class = TestSerializerV1.TestListSerializer
    http_method_names = ["get", "post"]

Error

MySQLdb._exceptions.OperationalError: (1054, "Unknown column 'tests_test.new_field' in 'field list'")

Behavior : When I create some new field into Test Model, below line causes the error.

class TestViewSet(mixins.CreateModelMixin, GenericViewSet):
    """
    # test viewset
    """

    # queryset = Test.objects.first() <= here, this code is error!!!
    queryset = Test.objects.all() <= this code works!!!
    serializer_class = TestSerializerV1.TestListSerializer
    http_method_names = ["get", "post"]

Question : What is the difference between first() and all()?