遇到问题：

ERROR  Failed to compile with 1 error                                                                         上午10:30:14

[eslint]
C:\Users\Administrator\Desktop\后台管理页面\one-project\src\App.vue
  15:8  error  'HelloWorld' is defined but never used  no-unused-vars

✖ 1 problem (1 error, 0 warnings)

You may use special comments to disable some warnings.
Use // eslint-disable-next-line to ignore the next line.
Use /* eslint-disable */ to ignore all warnings in a file.
ERROR in [eslint]
C:\Users\Administrator\Desktop\后台管理页面\one-project\src\App.vue
  15:8  error  'HelloWorld' is defined but never used  no-unused-vars

✖ 1 problem (1 error, 0 warnings)

webpack compiled with 1 error

解决方法：

第一步：选中并打开"vue.config.js"

 第二步：输入"lintOnSave:false"来关闭eslint校验

最后：执行命令 "npm run serve"