停止服务之后再次启动后,网页访问提示如下错误:

11:54:19 ERROR: in D:\ProTool\xampp\zentao\framework\base\router.class.php on line 2173, last called by D:\ProTool\xampp\zentao\framework\base\router.class.php on line 2124 through function connectByPDO.
in D:\ProTool\xampp\zentao\framework\base\router.class.php on line 2224 when visiting

禅道版本 12.1 Windows安装包
操作系统 Windows 7
客户端浏览器 Firefox