DedeCMS Error Warning!

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Error page: /a/plus/erraddsave.php?aid=9666&title=%E5%BE%B7%E5%9B%BD%E4%B8%A4%E6%9E%B6%E8%AD%A6%E7%94%A8%E7%9B%B4%E5%8D%87%E6%9C%BA%E7%9B%B8%E6%92%9E%E5%9D%A0%E6%AF%81+%E8%87%B3%E5%B0%91%E4%B8%80%E5%90%8D%E9%A9%BE%E9%A9%B6%E5%91%98%E6%AD%BB%E4%BA%A1
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!