不能很好地配置laravel homestead

我配置了虚拟机，但是当我把url放在浏览器中时，一直显示一个页面说"它工作"。什么也没变。

这是我的配置(homestead.yml)

---
ip: "192.168.10.10"
memory: 2048
cpus: 1
authorize: /Users/nvFede/.ssh/id_rsa.pub
keys:
    - /Users/nvFede/.ssh/id_rsa
folders:
    - map: /Users/nvFede/code/testapp
      to: /home/vagrant/code/testapp
sites:
    - map: testapp.app
      to: /home/vagrant/code/testapp/public
variables:
    - key: APP_ENV
      value: local