IntegrityError: duplicate key value violates unique constraint "studying_study_order_id_key"

[sentry-io]

Sentry Issue: EDUCATION-BACKEND-42

Study.DoesNotExist: Study matching query does not exist.
  File "django/db/models/query.py", line 581, in get_or_create
    return self.get(**kwargs), False
  File "django/db/models/query.py", line 435, in get
    raise self.model.DoesNotExist(

UniqueViolation: duplicate key value violates unique constraint "studying_study_order_id_key"
DETAIL:  Key (order_id)=(2967) already exists.

  File "django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)

IntegrityError: duplicate key value violates unique constraint "studying_study_order_id_key"
DETAIL:  Key (order_id)=(2967) already exists.

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  File "django/db/backends/utils.py", line 66, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "django/db/backends/utils.py", line 75, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
  File "django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)