```ruby
json.call(product, :id, :name, :net_surface_area, :born_at, :dead_at, :variety)
json.production_started_on product.production.started_on
json.production_stopped_on product.production.stopped_on
```

Fix call on nil in the view for land_parcel
user
```ruby
json.call(product, :id, :name, :net_surface_area, :born_at, :dead_at, :variety)

json.production_started_on product.production&.started_on
json.production_stopped_on product.production&.stopped_on
```
assistant