IIS服务器提示 The XML page cannot be displayed

IIS服务器提示 The XML page cannot be displayedCannot view XML input using XSL style sheet.Please correct the error and then click the Refresh button,or try again later.-----------------------------------------------------------------A name was started with an invalid character.Error processing resource 'http://localhost/TaskManager/'.Line 1,Position 2 IIS服务器提示这个错误,