IntegrityError: (psycopg2.IntegrityError) null value in column "destination_id" violates not-null constraint

[Turbo87]

https://sentry.io/skylines/api/issues/562436360/

IntegrityError: (psycopg2.IntegrityError) null value in column "destination_id" violates not-null constraint
DETAIL:  Failing row contains (450, 93, null, 2013-03-10 18:14:14.553278).
 [SQL: 'UPDATE followers SET destination_id=%(destination_id)s WHERE followers.id = %(followers_id)s'] [parameters: ({'followers_id': 450, 'destination_id': None}, {'followers_id': 1851, 'destination_id': None})] (Background on this error at: http://sqlalche.me/e/gkpj)
(22 additional frame(s) were not displayed)
...
  File "sqlalchemy/engine/base.py", line 1200, in _execute_context
    context)
  File "sqlalchemy/engine/base.py", line 1413, in _handle_dbapi_exception
    exc_info
  File "sqlalchemy/util/compat.py", line 203, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "sqlalchemy/engine/base.py", line 1170, in _execute_context
    context)
  File "sqlalchemy/dialects/postgresql/psycopg2.py", line 683, in do_executemany
    cursor.executemany(statement, parameters)

IntegrityError: (psycopg2.IntegrityError) null value in column "destination_id" violates not-null constraint
DETAIL:  Failing row contains (450, 93, null, 2013-03-10 18:14:14.553278).
 [SQL: 'UPDATE followers SET destination_id=%(destination_id)s WHERE followers.id = %(followers_id)s'] [parameters: ({'followers_id': 450, 'destination_id': None}, {'followers_id': 1851, 'destination_id': None})] (Background on this error at: http://sqlalche.me/e/gkpj)

[sentry]

Sentry issue: API-55