DedeCMS Error Warning!

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Error page: /plus/erraddsave.php?aid=707&title=%E5%A8%81%E5%B0%BC%E6%96%AF%E4%BA%BA%E8%B5%8C%E5%9F%8E%EF%BC%9A+The+COVID-19+infection+rate+appears+to+be+stabilizin
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!