Traceback (most recent call last):


 "<stdin>", line 1, in <module>
TypeError: subscribe() takes at least 3 arguments (2 given)

Traceback (most recent call last):


 "./manage.py", line 15, in <module>

execute_from_command_line(sys.argv)


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line

utility.execute()


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute

self.fetch_command(subcommand).run_from_argv(self.argv)


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv

self.execute(*args, **cmd_options)


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute

output = self.handle(*args, **options)


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 223, in handle

self.verbosity, self.interactive, connection.alias, apps=post_migrate_apps, plan=plan,


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/core/management/sql.py", line 51, in emit_post_migrate_signal

**kwargs


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/dispatch/dispatcher.py", line 178, in send

for receiver in self._live_receivers(sender)


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/dispatch/dispatcher.py", line 178, in <listcomp>

for receiver in self._live_receivers(sender)


 "/Users/techdragon/scratch-projects/djongo-experiment/.venv/lib/python3.6/site-packages/django/contrib/auth/management/__init__.py", line 71, in create_permissions

"content_type", "codename"
TypeError: unhashable type: 'list'
