Error "Too few arguments to function"

[mrigo]

Hello, I've

• installed the package
• added use SpatialTrait; and protected $spatialFields = [ 'geo_latlon' ]; in my Model
• added

  Map::make('Some Point Location')
          ->spatialType('LatLon')
          ->latitude('lat')
          ->longitude('lng')

in my resource

but I'm always getting this error

"Too few arguments to function Laravel\Nova\Fields\Field::__construct(), 0 passed blabla/Server/nova/src/Element.php on line 59 and at least 1 expected"

What's wrong?

Thanks! \m