Ensure that the automatic index is created after the default document type is created.

mayan/apps/document_indexing/apps.py

@@ -17,7 +17,7 @@ from common import (
 from common.classes import Package
 from common.signals import post_initial_setup
 from common.widgets import two_state_template
-from documents.signals import post_document_created
+from documents.signals import post_document_created, post_initial_document_type
 from mayan.celery import app
 from navigation import SourceColumn
 from rest_api.classes import APIEndPoint
@@ -56,6 +56,10 @@ class DocumentIndexingApp(MayanAppConfig):
             app_label='documents', model_name='Document'
         )
 
+        DocumentType = apps.get_model(
+            app_label='documents', model_name='DocumentType'
+        )
+
         DocumentMetadata = apps.get_model(
             app_label='metadata', model_name='DocumentMetadata'
         )
@@ -234,9 +238,9 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
             document_created_index_update,
             dispatch_uid='document_created_index_update', sender=Document
         )
-        post_initial_setup.connect(
+        post_initial_document_type.connect(
             create_default_document_index,
-            dispatch_uid='create_default_document_index'
+            dispatch_uid='create_default_document_index', sender=DocumentType
         )
         post_save.connect(
             document_metadata_index_update,