ctrlpanel/database/factories/ServerFactory.php

<?php

namespace Database\Factories;

use App\Models\Product;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Str;

class ServerFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'name' => $this->faker->name(),
            'description' => $this->faker->text(60),
            'identifier' => Str::random(30),
            'pterodactyl_id' => $this->faker->numberBetween(1000000, 1000000000),
            'product_id' => Product::factory(),
        ];
    }
}