运行不起来请问怎么回事呀

[yaoyunz]

报这个：
PS C:\Users\Lenovo\Downloads\3d-wind-master> npm run build

[email protected] build
babel src --out-dir lib --copy-files && parcel build demo/index.html --public-url /3d-wind/

Successfully compiled 14 files with Babel (5833ms).
× C:\Users\Lenovo\Downloads\3d-wind-master\demo\index.js: Duplicate plugin/preset detected.
If you'd like to use two separate instances of a plugin,
they need separate names, e.g.

plugins: [
['some-plugin', {}],
['some-plugin', {}, 'some unique name'],
]

Duplicates detected are:
[
{
"alias": "C:\Users\Lenovo\Downloads\3d-wind-master\node_modules\@babel\plugin-transform-classes\lib\index.js",
"dirname": "C:\Users\Lenovo\Downloads\3d-wind-master",
"ownPass": false,
"file": {
"request": "@babel/plugin-transform-classes",
"resolved": "C:\Users\Lenovo\Downloads\3d-wind-master\node_modules\@babel\plugin-transform-classes\lib\index.js"
}
},
{
"alias": "base$28",
"options": {
"spec": false,
"useBuiltIns": true
},
"dirname": "C:\Users\Lenovo\Downloads\3d-wind-master",
"ownPass": false
}
]