线上不行，数据库都连不上。本地可以！为什么呢？？

注册报错
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vagrant@homestead:~/code/Laravel$ heroku pg:reset DATABASE --confirm samoyedsun
Resetting postgresql-animated-81117... done
vagrant@homestead:~/code/Laravel$ heroku run php artisan migrate
Running php artisan migrate on ⬢ samoyedsun... up, run.4979 (Free)
**************************************
*     Application In Production!     *
**************************************

 Do you really wish to run this command? (yes/no) [no]:
 > yes

In Connection.php line 664:

  SQLSTATE[HY000] [2002] Connection refused (SQL: select * from information_schema.tables where table_schema = forge and tabl
  e_name = migrations)

In Connector.php line 67:

  SQLSTATE[HY000] [2002] Connection refused