DedeCMS Error Warning!

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Error page: /plus/list.php?sqzt=%E5%BC%80%E6%94%BE%E7%94%B3%E6%8A%A5%E4%B8%AD&tid=2&xmjb=%E5%A4%A7%E9%B9%8F%E6%96%B0%E5%8C%BA%7C%E5%9D%AA%E5%B1%B1%E5%8C%BA%7C%E5%AE%9D%E5%AE%89%E5%8C%BA&zzld=500%E4%B8%87%E4%BB%A5%E4%B8%8A
Error infos: DedeCms错误警告:连接数据库失败,可能数据库密码不对或数据库服务器出错!