服务器是否在主机“ localhost”上运行？

如何解决服务器是否在主机“ localhost”上运行？

我对postgresql有问题。我看到一些帖子正在编辑pg_hba.conf，但是它不起作用。

这里是问题：

sql

还有我的pg_hba.conf：

sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) Could not connect to server: Connection refused (0x0000274D/10061)
        Is the server running on host "localhost" (::1) and accepting
        TCP/IP connections on port 32?
Could not connect to server: Connection refused (0x0000274D/10061)
        Is the server running on host "localhost" (127.0.0.1) and accepting
        TCP/IP connections on port 32?

如果有人可以向我解释，我不明白这是什么问题。