碰到这个问题，不知道怎么解决！已解决悬赏10积分

12:27:57 ERROR: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) in D:\ZenTao\xampp\zentao\framework\base\router.class.php on line 1883, last called by D:\ZenTao\xampp\zentao\framework\base\router.class.php on line 1841 through function connectByPDO.
in D:\ZenTao\xampp\zentao\framework\base\router.class.php on line 1932 when visiting