laravel-admin 报错 Disk [admin] not configured, please add a disk config in `config/filesystems.php`.

在config/filesystems.php中添加：

'admin' => [
    'driver'     => 'local',
    'root'       => public_path('upload'),
    'visibility' => 'public',
    'url' => env('APP_URL').'/public/upload/',
],