数据库连接 502 - Web server received an invalid response while ac

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数据库连接 502 - Web server received an invalid response while acting as a gateway or proxy server.
502 - Web server received an invalid response while acting as a gateway or proxy server.
There is a problem with the page you are looking for,and it cannot be displayed.When the Web server (while acting as a gateway or proxy) contacted the upstream content server,it received an invalid response from the content server.数据库连接时显示的错误

502-当网络服务器作为网关或者代理服务器的时候收到一个无效的回应.您所查找的页面存在问题,无法显示.当网络服务器（网关和代理）联系上行数据流内容服务器时,收到一个无效的回应.

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