FieldError: Invalid field name(s) for model GenericDocument: 'principal'.

[sentry-io]

Sentry Issue: LII-2RH

GenericDocument.DoesNotExist: GenericDocument matching query does not exist.
  File "django/db/models/query.py", line 916, in get_or_create
    return self.get(**kwargs), False
  File "django/db/models/query.py", line 637, in get
    raise self.model.DoesNotExist(

FieldError: Invalid field name(s) for model GenericDocument: 'principal'.
(3 additional frame(s) were not displayed)
...
  File "peachjam/tasks.py", line 72, in update_document
    ingestor.update_document(document_id)
  File "peachjam/models/ingestors.py", line 80, in update_document
    adapter.update_document(document_id)
  File "peachjam/adapters/indigo.py", line 353, in update_document
    created_doc, new = model.objects.update_or_create(