我正在开发一个Flask项目，我准备将我的数据库部署到Heroku，但是当我尝试将本地数据库推送到PG数据库时，我收到以下错误。我搜索了其他StackOverflow帖子，但似乎没有提出的解决方案。以下是错误消息：
pg_dump: [archiver (db)] connection to database "database-name" failed: could not connect to server: Connection refused
`Is the server running on host "localhost" (::1) and accepting`
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (fe80::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?
pg_restore: [archiver] input file is too short (read 0, expected 5)
psql: could not connect to server: Connection refused
Is the server running on host "localhost" (::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (fe80::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?
! Heroku client internal error.
! Search for help at: https://help.heroku.com
! Or report a bug at: https://github.com/heroku/heroku/issues/new
Error: psql failed. exit status 512, output: "" (RuntimeError)
Command: heroku pg:push database-name DATABASE_URL --app app-name
Version: heroku-toolbelt/3.39.5 (x86_64-darwin10.8.0) ruby/1.9.3
Error ID: 020bc5cc53ec48298f24125be8705f53
非常感谢任何见解。我几个小时一直在努力。谢谢！