Show preview of already saved image in FileUpload

foreach() argument must be of type array|object, string given

<?php

namespace App\Filament\Pages;

use App\Models\Photo;
use Filament\Forms\Components\FileUpload;
use Filament\Pages\Page;
use Filament\Schemas\Concerns\InteractsWithSchemas;
use Filament\Schemas\Contracts\HasSchemas;
use Filament\Schemas\Schema;
use Livewire\Attributes\Url;

class VetPhoto extends Page implements HasSchemas
{
    use InteractsWithSchemas;

    #[Url]
    public ?int $photoId = null;

    protected string $view = 'filament.pages.vet-photo';

    public Photo $photo;

    public ?array $data = [];

    public function mount(): void
    {
        $this->data['file'] = 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTfHlcmASZgNOAA0mtIwob78oSLwGP1PybjDQ&s';
    }

    public function form(Schema $schema): Schema
    {
        return $schema
            ->components([
                FileUpload::make('file')->image(),
            ])
            ->statePath('data');
    }
}