Why Laravel Orchid Upload field saves files to the "null" directory in storage?

I have the following field in my Layout:

Upload::make('candidate.blank')
                  ->storage('local')
                  ->title('Анкета')
                  ->groups('blank')

It should save file to the storage/app/[year]/[month]/[day] directory as default, but the file is saved to the storage/app/null directory.

filesystems.php has needed disk:

'disks' => [
        'local' => [
            'driver' => 'local',
            'root'   => storage_path('app'),
            'throw'  => false,
        ],
    ]

Configuration for attachments in platform.php is default:

'attachment' => [
    'disk'      => 'local',
    'generator' => \Orchid\Attachment\Engines\Generator::class,
],

Logs don't have errors. If i save files to the public disc, it works the same, files are saved to storage/app/public/null/