I'm trying to return mutliply queryset

Question

I have endpoin called groups I want to return to each user groups that he created and the groups that he member in it my model

class Group(models.Model):
    title = models.CharField(max_length=100,blank=False,default='')
    project = models.ForeignKey('Project',related_name='groups',on_delete=models.CASCADE)
    owner = models.ForeignKey('auth.User',related_name='group',on_delete=models.CASCADE)
    member = models.ManyToManyField('auth.User',related_name='group_members')
    created = models.DateTimeField(auto_now_add=True)
    active = models.BooleanField(default=False)

    def __str__(self):
        return self.title

here is my serializer

class GroupSerializer(serializers.HyperlinkedModelSerializer):
    owner = serializers.ReadOnlyField(source='owner.username')
    class Meta:
        model = Group
        fields = ('url','title','owner','member','created','active','project',)

here is my view

class GroupViewSet(viewsets.ModelViewSet):
    """
    This viewset automatically provides `list` and `detail` actions.
    """
    queryset = Group.objects.all()
    serializer_class = GroupSerializer
    permission_classes = (
        permissions.IsAuthenticated,)
   
    def get_queryset(self):
        queryset = self.queryset
        query_set = queryset.filter(owner=self.request.user)
        query_set1 = queryset.filter(member=self.request.user)

        return list(chain(query_set)) + list(chain(query_set1))


    def perform_create(self, serializer):
        serializer.save(owner=self.request.user)

this view work with me but in the Group Instance return "detail": "Not found."

here is my urls

router = DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'projects', views.ProjectViewSet)
router.register(r'tasks', views.TaskViewSet)
router.register(r'groups', views.GroupViewSet)

# The API URLs are now determined automatically by the router.
# Additionally, we include the login URLs for the browsable API.
urlpatterns = [
    re_path(r'^', include(router.urls))
]

sorry my english is not good at all hope you understand me and hope you to help me thanks