How to insert in Laravel?

I have output object $product after inserting data into table Product:

$product = Product::create($data);

In model Product I have:

public function images()
    {
        return $this->hasMany("App\ProductImage");
    }

The I try to add images to table product_images:

$product->images()->save(new ProductImage(UploadFiles::$files));

Relationship beetwen tables is product.id = product_images.

So, after inserting I get message:

General error: 1364 Field 'image' doesn't have a default value (SQL: insert into `product_images` (`product_id`) values (21))

via Chebli Mohamed