控制台显示的信息：

Download the Vue Devtools extension for a better development experience:

[https://github.com/vuejs/vue-devtools](https://github.com/vuejs/vue-devtools)

vue.js:9064 You are running Vue in development mode.

Make sure to turn on production mode when deploying for production.

See more tips at [https://vuejs.org/guide/deployment.html](https://vuejs.org/guide/deployment.html)

如图所示

原因：设定axios网址请求前缀的关键字写错，如图所示

正确写法如下：