Assets 404 not found with Vite + React Router

[lightzane]

Issue
Using Vite with React Router is loading the assets folder from the deep routes

Steps to Reproduce:

1. Navigate to frontend "/example/deep/again?something=123
2. Refresh the page

Expected:
Navigates successfully to https://.github.io//example/deep/again
without any error

Actual:
Navigated successfully to https://.github.io//example/deep/again
as blank page WITH errors (This is assumed to be the blank 404.html that was loaded)

Error in browser console:
https://.github.io//example/deep/assets/index-[hash].css (404 NOT FOUND)
https://.github.io//example/deep/assets/index-[hash].js (404 NOT FOUND)

[vickbk]

Adding the build.rollupOptions to generate your 404 page should help loading it and processing it successfully