Fix model property

graphene_django/fields.py

@@ -20,7 +20,10 @@ class DjangoListField(Field):
 
     @property
     def model(self):
-        return self.type.of_type._meta.node._meta.model
+        _type = self.type.of_type
+        if isinstance(_type, NonNull):
+            _type = _type.of_type
+        return _type._meta.model
 
     @staticmethod
     def list_resolver(resolver, root, info, **args):

graphene_django/tests/test_fields.py

@@ -0,0 +1,18 @@
+import pytest
+from graphene import ObjectType, Schema
+
+from ..fields import DjangoListField
+from ..types import DjangoObjectType
+from .models import Reporter as ReporterModel
+
+
+@pytest.mark.django_db
+class TestDjangoListField:
+    def test_get_django_model(self):
+        class Reporter(DjangoObjectType):
+            class Meta:
+                model = ReporterModel
+                fields = ("first_name",)
+
+        list_field = DjangoListField(Reporter)
+        assert list_field.model is ReporterModel