当我启动rails服务器并在终端中发生IPAddr::InvalidAddressError: invalid address错误时，我得到一个随机的“我们很抱歉，但出了点问题”。大多数情况下，我会得到错误，但有时它实际上会工作几分钟然后出现。不知道问题是什么。
编辑：好了，现在我重新启动计算机后出现了一个全新的错误。
PG::ConnectionBad (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?
):
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答案 0 :(得分：1)
好像你的Postgres服务器没有运行
PG::ConnectionBad (could not connect to server: Connection refused
Is the server running on host "localhost" (::1) and accepting
TCP/IP connections on port 5432?
您需要启动服务器，一切都会正常运行。