Laravel Vapor upload issue using Vite in production mode

I've implemented the laravel vapor npm package:

npm i laravel-vapor

Imported it in my app.js

import Vapor from 'laravel-vapor';
window.Vapor = Vapor;

Using Vite 5 in develop mode, everything works just fine. Files are being stored at S3. When running npm run build (production mode), I run into an issue while trying to upload files:

Upload failed TypeError: Vp.default.post is not a function

Can somebody please give me a push in the right direction?