django - Cannot use VersionAdmin with a database that does not support savepoints -

i use django-reversion , getting error out of blue.

django.core.exceptions.improperlyconfigured: cannot use versionadmin database not support savepoints.

it occurs on line admin.site.register(post,postadmin)

cannot use python manage.py on local, though works fine in production.

have tried changing database(postgresql) no avail.

the problem settings did not take database.

i using local settings had typo error. , not showing error because in try, except block, did not write importerror.