禅道的mysql突然启动不了了，如何解决，之前没有备份过数据不知道数据会不会丢失已解决悬赏5积分

启动禅道之后，选择开源版后报错如下：

20:10:13 ERROR: SQLSTATE[HY000] [1045] Access denied for user 'root'@'127.0.0.1' (using password: YES) in /opt/zbox/app/zentao/framework/base/router.class.php on line 2173, last called by /opt/zbox/app/zentao/framework/base/router.class.php on line 2124 through function connectByPDO.
in /opt/zbox/app/zentao/framework/base/router.class.php on line 2224 when visiting