多个文件名大小写不同，是因为运行代码是大写E，用vscode运行的是小写e，解决方案：手动npm run dev #There are multiple modules with names that only differ in casing.

 warning  in E:/xxx/xx/xxx/node_modules/_vue-style-loader@4.1.2@vue-style-loader/lib/listToStyles.js

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:
* E:\xxx\xxx\xxx\node_modules\_vue-style-loader@4.1.2@vue-style-loader\lib\listToStyles.js
    Used by 3 module(s), i. e.
    E:\xxx\xxx\xxx\node_modules\_vue-style-loader@4.1.2@vue-style-loader\lib\addStylesClient.js
* e:\xxx\xxx\xxx\node_modules\_vue-style-loader@4.1.2@vue-style-loader\lib\listToStyles.js
    Used by 3 module(s), i. e.
    e:\xxx\xxx\xxx\node_modules\_vue-style-loader@4.1.2@vue-style-loader\lib\addStylesClient.js