If you ever find this topic and the same issue. For me it was that Laravel was pointing to http and not https. Seems legit in a development environment... but not for production.

So whats the solution? This: https://stackoverflow.com/a/61313133/4892914

Your AppServiceProvider.php, boot() function should look like this:

public function boot(): void
{
    Vite::prefetch(concurrency: 3); // optional ofc

    if (env('APP_ENV') === 'production') {
        \Illuminate\Support\Facades\URL::forceScheme('https');
    }
}