Added apps.core in installed_apps in settings and changed the apps.core.apps CoreConfig.name to apps.core.

apps/core/apps.py

@@ -3,4 +3,4 @@ from django.apps import AppConfig
 
 class CoreConfig(AppConfig):
     default_auto_field = "django.db.models.BigAutoField"
-    name = "core"
+    name = "apps.core"

config/settings.py

@@ -36,6 +36,7 @@ INSTALLED_APPS = [
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
+    "apps.core",
 ]
 
 MIDDLEWARE = [