python - Why django-background-tasks doesn't create table background_task_completedtask -

i run package background_task_completedtask on django 1.11 , python 3.5.2 http://django-background-tasks.readthedocs.io/en/latest/:

python: 2 & 3 django: 1.8–1.11

when run migrations got output:

- remove field creator_content_type completedtask - delete model completedtask 

and migration:

class migration(migrations.migration):      dependencies = [         ('background_task', '0001_initial'),     ]      operations = [         migrations.removefield(             model_name='completedtask',             name='creator_content_type',         ),         migrations.deletemodel(             name='completedtask',         ),     ] 

and gone when run tasks django raise error django.db.utils.operationalerror: no such table: background_task_completedtask

why django remove table , how can avoid it? should ignore migration or there more clever way?

p.s. check simial questions didn't find solution.

udp can fake migration got problem. django-background-tasks register each task 2 times (i call one). suggest how cook it? or else light weight background queue django? found lot of them projects without changes few years.