Fixed #23366 -- Fixed a crash with the migrate --list command.

django/core/management/commands/showmigrations.py

@@ -41,7 +41,7 @@ class Command(BaseCommand):
         some named apps.
         """
         # Load migrations from disk/DB
-        loader = MigrationLoader(connection)
+        loader = MigrationLoader(connection, ignore_no_migrations=True)
         graph = loader.graph
         # If we were passed a list of apps, validate it
         if app_names:

docs/releases/1.7.2.txt

@@ -189,3 +189,6 @@ Bugfixes
 
 * Fixed crash when ``ValidationError`` is initialized with a ``ValidationError``
   that is initialized with a dictionary (:ticket:`24008`).
+
+* Prevented a crash on apps without migrations when running ``migrate --list``
+  (:ticket:`23366`).