Fixed #23039: Don't try to serialize unmanaged models in tests

1 files changed, 1 insertions, 1 deletions

diff --git a/django/db/backends/creation.py b/django/db/backends/creation.py
index e8308c9a91..4e6c1e52c6 100644
--- a/django/db/backends/creation.py
+++ b/django/db/backends/creation.py
@@ -424,7 +424,7 @@ class BaseDatabaseCreation(object):
         # Make a function to iteratively return every object
         def get_objects():
             for model in sort_dependencies(app_list):
-                if not model._meta.proxy and router.allow_migrate(self.connection.alias, model):
+                if not model._meta.proxy and model._meta.managed and router.allow_migrate(self.connection.alias, model):
                     queryset = model._default_manager.using(self.connection.alias).order_by(model._meta.pk.name)
                     for obj in queryset.iterator():
                         yield obj