id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
30813	dumpdata > flush > loaddata.	Maksych	nobody	"After commands:
> python manage.py dumpdata > db.json
> python manage.py loaddata db.json
All it`s okay, but after:
> python manage.py flush
> python manage.py loaddata db.json
Have exception:
> django.db.utils.IntegrityError: Problem installing fixture 'D:\projects\python\django\ultrashop_backend\db.json': Could not load contenttypes.ContentType"	Bug	closed	Core (Management commands)	dev	Normal	invalid			Unreviewed	0	0	0	0	0	0