80端口被占用怎么办？已解决悬赏5积分

之前安装过一次，再次安装之后80端口被占用，自动配置成81，启动禅道后网页报下面的错误

15:25:37 ERROR: SQLSTATE[HY000] [1045] Access denied for user 'zentao'@'localhost' (using password: YES) in D:\xampp\zentao\framework\base\router.class.php on line 2143, last called by D:\xampp\zentao\framework\base\router.class.php on line 2101 through function connectByPDO.
in D:\xampp\zentao\framework\base\router.class.php on line 2193 when visiting