访问禅道时，提示数据库启动失败已解决悬赏5积分

14:54:28 ERROR: SQLSTATE[HY000] [1049] Unknown database 'ywt_db' in E:\xampp\zentao\framework\base\router.class.php on line 2164, last called by E:\xampp\zentao\framework\base\router.class.php on line 2115 through function connectByPDO.
in E:\xampp\zentao\framework\base\router.class.php on line 2215 when visiting