ProgrammingError: relation "django_session" does not exist

Question

Got this error after changing my database from sqlite to postgresql. I've made all my settings changes:

Here's my settings:

DATABASES = {
    'default': {
        'ENGINE': "django.db.backends.postgresql_psycopg2",
        'NAME': "postr1",
        'USER': "zorgan",
        'PASSWORD': config('DB_PASSWORD'),
        'HOST': "localhost",
        'PORT': '',
    }
}

as well as performing makemigrations and migrations which were all successful. So I'm able to succesfully start my local server:

System check identified no issues (0 silenced).
May 15, 2018 - 08:59:39
Django version 1.11.8, using settings 'draft1.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.

however when I go to the site it returns this error:

ProgrammingError at /news/
relation "django_session" does not exist
LINE 1: ...ession_data", "django_session"."expire_date" FROM "django_se...

Any idea what the problem is?

Answer 1

Try fake migrate to zero.

Your migration history shows that sessions table was already made, but you don't have real table.

so following below

python manage.py migrate --fake sessions zero
# then your sessions migrate will be
python manage.py showmigrations
sessions
 [ ] 0001_initial
# then migrate with --fake-initial again
python manage.py migrate --fake-initial

Then try again.