django dumpdata => load on heroku - django

Question

I'm trying to load the data from my sqlite database to heroku postgres but it is not working.
First I ran:
manage.py dumpdata --indent 1 > data.json
and then I tried to upload it to heroku with (after I committed the file to heroku):
heroku run python manage.py loaddata data.json
but it just didn't work...
it gave me errors:
Running `python manage.py loaddata data.json` attached to terminal... up, run.92
01
Traceback (most recent call last):
File "manage.py", line 11, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/_
_init__.py", line 385, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/_
_init__.py", line 377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/b
ase.py", line 288, in run_from_argv
self.execute(*args, **options.__dict__)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/b
ase.py", line 338, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/c
ommands/loaddata.py", line 61, in handle
self.loaddata(fixture_labels)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/c
ommands/loaddata.py", line 91, in loaddata
self.load_label(fixture_label)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/c
ommands/loaddata.py", line 148, in load_label
obj.save(using=self.using)
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/serializers/
base.py", line 173, in save
models.Model.save_base(self.object, using=using, raw=True)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/base.py
", line 617, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, upda
te_fields)
File "/app/.heroku/python/lib/python2.7/sitepackages/django/db/models/base.py
", line 679, in _save_table
forced_update)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/base.py
", line 723, in _do_update
return filtered._update(values) > 0
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/query.p
y", line 600, in _update
return query.get_compiler(self.db).execute_sql(CURSOR)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/sql/com
piler.py", line 1004, in execute_sql
cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/sql/com
piler.py", line 786, in execute_sql
cursor.execute(sql, params)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/utils
.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/utils
.py", line 65, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: Problem installing fixture '/app/data.json': C
ould not load contenttypes.ContentType(pk=1): relation "django_content_type" does not exist
LINE 1: UPDATE "django_content_type" SET "name" = 'log entry', "app_...
What may be the problem?

Answer 1

The end of the stacktrace has the key:
relation "django_content_type" does not exist
LINE 1: UPDATE "django_content_type" SET "name" = 'log entry', "app_...
The table django_content_type does not exist. Try running the migrations:
heroku run python manage.py migrate
or, if you are using an old version:
heroku run python manage.py setupdb