ActiveRecord::NotNullViolation: PG::NotNullViolation: ERROR: null value in column "released_at" violates not-null constraint

https://sentry.gitlab.net/gitlab/gitlabcom/issues/833348/

PG::NotNullViolation: ERROR:  null value in column "released_at" violates not-null constraint
DETAIL:  Failing row contains (880290, v1.0, Release for tag v1.0, 13511032, 2019-02-27 22:14:02, null, null, null, null, null, null, null).

  peek/views/pg.rb:17:in `async_exec'
    super(*args)
  peek/views/pg.rb:17:in `async_exec'
    super(*args)
  active_record/connection_adapters/postgresql/database_statements.rb:75:in `block (2 levels) in execute'
    @connection.async_exec(sql)
  active_support/dependencies/interlock.rb:48:in `block in permit_concurrent_loads'
    yield
  active_support/concurrency/share_lock.rb:187:in `yield_shares'
    yield
...
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ActiveRecord::NotNullViolation: PG::NotNullViolation: ERROR:  null value in column "released_at" violates not-null constraint
DETAIL:  Failing row contains (880290, v1.0, Release for tag v1.0, 13511032, 2019-02-27 22:14:02, null, null, null, null, null, null, null).
:         INSERT INTO releases ("tag", "description", "created_at", "updated_at", "project_id")
        VALUES ('v1.0', 'Release for tag v1.0', '2019-02-27 22:14:02', NULL, 13511032)

PG::NotNullViolation: ERROR:  null value in column "released_at" violates not-null constraint
DETAIL:  Failing row contains (880290, v1.0, Release for tag v1.0, 13511032, 2019-02-27 22:14:02, null, null, null, null, null, null, null).
:         INSERT INTO releases ("tag", "description", "created_at", "updated_at", "project_id")
        VALUES ('v1.0', 'Release for tag v1.0', '2019-02-27 22:14:02', NULL, 13511032)