[求助]关于配置tomcat的问题1！

请问正常安装好tomcat后，运行http://127.0.0.1:8080进入欢迎界面后怎么进行管理员配置时出现了“Tomcat's administration web application is no longer installed by default. Download and install the "admin" package to use it？？？”这个提示，请问该怎么办？？？？？？