解决There are multiple modules with names that only differ in casing.

There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:
* C:\Users\Administrator\Desktop\vscode\第五周\Day17\day17\node_modules\vue-loader\index.js??ref--0!C:\Users\Administrator\Desktop\vscode\第五周\Day17\day17\src\components\SideBar.vue
    Used by 1 module(s), i. e.
    C:\Users\Administrator\Desktop\vscode\第五周\Day17\day17\node_modules\babel-loader\lib\index.js!C:\Users\Administrator\Desktop\vscode\第五周\Day17\day17\node_modules\vue-loader\lib\selector.js?type=script&index=0!C:\Users\Administrator\Desktop\vscode\第五周\Day17\day17\src\components\Home.vue

解决：就是命名问题