FileUpload form field and it's default values

<?php

namespace App\Filament\Pages;

use Filament\Forms\Components\FileUpload;
use Filament\Pages\Page;
use Filament\Schemas\Schema;
use Livewire\Features\SupportFileUploads\TemporaryUploadedFile;

class TestForm extends Page
{

    public function form(Schema $schema): Schema
    {
        return $schema
            ->components([
                FileUpload::make('upd')
                    ->default(['udp/thesis.txt']),
//                ->default([TemporaryUploadedFile::createFromLivewire('udp/thesis.txt')]),
            ]);
    }

    protected string $view = 'filament.pages.test-form';
}

<x-filament-panels::page>
    <form>
        {{$this->form}}
    </form>
    {{-- Page content --}}
</x-filament-panels::page>