本问题大致表现为访问宝塔主机中的网站域名时，显示：
Testing 123…
This page is used to test the proper operation of the Apache HTTP server after it has been installed. If you can read this page it means that this site is working properly. This server is powered by CentOS.
解决办法
请前往左侧软件管理或软件商店处，找到Nginx服务，点击启动或重启即可。