django.db.migrations.exceptions.InconsistentMigrationHistory

Question

When I run python manage.py migrate on my Django project, I get the following error:

Traceback (most recent call last):
File \"manage.py\", line         


        

Answer 1

This happened to me in a new project after I added a custom User model, per the recommendation in the django docs.

If you’re starting a new project, it’s highly recommended to set up a custom user model, even if the default User model is sufficient for you.

Here is what I did to solve the problem.

1. Delete the database db.sqlite3.
2. Delete the app/migrations folder.

Per @jackson, temporarily comment out django.contrib.admin.

INSTALLED_APPS = [
...
#‘django.contrib.admin’,
...
]

Also comment out the admin site in urls.py:

urlpatterns = [
    path('profile/', include('restapp.urls')),
    #path('admin/', admin.site.urls),
]

If you don't comment out the path('admin/'), you will get error "LookupError: No installed app with label 'admin'" when you run

python manage.py migrate

After the migrations finish, uncomment both of the above.