Error running python manage.py migrate

[aih]

This worked with a previous version of the feature/bill-sponsor branch, but now at c63877d, I get:

File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
psycopg2.errors.ObjectInUse: cannot ALTER TABLE "bills_bill" because it has pending trigger events


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    main()
  File "manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/core/management/__init__.py", line 395, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/core/management/base.py", line 330, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/core/management/base.py", line 371, in execute
    output = self.handle(*args, **options)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/core/management/base.py", line 85, in wrapped
    res = handle_func(*args, **kwargs)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/core/management/commands/migrate.py", line 245, in handle
    fake_initial=fake_initial,
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/migrations/executor.py", line 117, in migrate
    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/migrations/executor.py", line 227, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/migrations/migration.py", line 124, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/migrations/operations/fields.py", line 236, in database_forwards
    schema_editor.alter_field(from_model, from_field, to_field)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/base/schema.py", line 572, in alter_field
    old_db_params, new_db_params, strict)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/postgresql/schema.py", line 168, in _alter_field
    new_db_params, strict,
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/base/schema.py", line 726, in _alter_field
    params,
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/base/schema.py", line 142, in execute
    cursor.execute(sql, params)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/utils.py", line 98, in execute
    return super().execute(sql, params)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/utils.py", line 66, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/Users/arihershowitz/.pyenv/versions/flatgov/lib/python3.7/site-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.OperationalError: cannot ALTER TABLE "bills_bill" because it has pending trigger events

[aih]

This may be a carry-over from a previous attempt to load the data. Closing for now.