Unable to generate slug with spatie laravel-sluggable

I'm not able to generate slug when seeding database. I'm creating an e-commerce website course, learning Laravel as a beginner.

But no error about slug is provided. What should I do? Slug is not inserted into database when slug column is not nullable. When I made slug collumn nullable, it remains empty. Laravel-sluggable installed.

This is the error I get:

SQLSTATE[HY000]: General error: 1364 Field 'slug' doesn't have a default value (Connection: mysql, SQL: insert into products (title, image, description, price, created_at, updated_at, created_by, updated_by) values (Accusantium enim sapiente reprehenderit.

Product.php:

<?php  
namespace App\Models;  
  
use Illuminate\Database\Eloquent\Factories\HasFactory;  
use Illuminate\Database\Eloquent\Model;  
use Illuminate\Database\Eloquent\SoftDeletes;  
use Spatie\Sluggable\HasSlug;  
use Spatie\Sluggable\SlugOptions;  
use Illuminate\Support\Facades\Log;  
  
class Product extends Model  
{  
    use HasFactory;  
    use HasSlug;  
    use SoftDeletes;  
  
    public function getSlugOptions(): SlugOptions  
    {  
        Log::info('Generating slug for product: ' . ($this->title));  
        return SlugOptions::create()  
            ->generateSlugsFrom('title')  
            ->saveSlugsTo('slug');  
    }  
}  

ProductFactory.php:

<?php  
  
namespace Database\Factories;  
use Illuminate\Database\Eloquent\Factories\Factory;  
use Illuminate\Support\Facades\Log;  
  
/**  
 * @extends \Illuminate\Database\Eloquent\Factories\Factory\<\App\Models\Product\>  
 */  
class ProductFactory extends Factory  
{  
    /**  
     * Define the model's default state.  
     *  
     * @return array<string, mixed>  
     */  
    public function definition(): array  
    {  
        Log::info('Generating fake product data');  
        return [  
            'title' => fake()->text(20),  
            'image' => fake()->imageUrl(),  
            'description' => fake()->realText(2000),  
            'price' => fake()->randomFloat(2, 2, 5),  
            'created_at' => now(),  
            'updated_at' => now(),  
            'created_by' => 1,  
            'updated_by' => 1,  
        ];  
    }  
}  

ProductSeeder.php:

<?php    
  
namespace Database\Seeders;  
use App\Models\Product;  
use Illuminate\Database\Console\Seeds\WithoutModelEvents;  
use Illuminate\Database\Seeder;  
use Illuminate\Support\Facades\Log;  
  
class ProductSeeder extends Seeder  
{  
    /**  
     * Run the database seeds.  
     */  
    public function run(): void  
    {  
        Log::info('Seeding products table with fake data');  
        Product::factory(50)->create();  
    }  
}  

laravel.log (nothing logged from Product.php)

[2025-11-19 14:16:48] local.INFO: Seeding products table with fake data    
[2025-11-19 14:16:48] local.INFO: Generating fake product data  

...and 49 other rows of Generating fake product data

2025_10_20_194742_create_products_table.php:

<?php  
  
use App\Models\User;  
use Illuminate\Database\Migrations\Migration;  
use Illuminate\Database\Schema\Blueprint;  
use Illuminate\Support\Facades\Schema;  
  
return new class extends Migration  
{  
    /**  
     * Run the migrations.  
     */  
    public function up(): void  
    {  
        Schema::create('products', function (Blueprint $table) {  
            $table->id();  
            $table->string('title', 2000);  
            $table->string('slug', 2000)->nullable(); // I tried not nullable too.  
            $table->string('image', 2000)->nullable();  
            $table->string('image_mime')->nullable();  
            $table->integer('image_size')->nullable();  
            $table->longText('description')->nullable();  
            $table->decimal('price', 10, 2);  
            $table->foreignIdFor(User::class, 'created_by')->nullable();  
            $table->foreignIdFor(User::class, 'updated_by')->nullable();  
            $table->softDeletes();  
            $table->foreignIdFor(User::class, 'deleted_by')->nullable();  
            $table->timestamps();  
        });  
    }  
  
    /**  
     * Reverse the migrations.  
     */  
    public function down(): void  
    {  
        Schema::dropIfExists('products');  
    }  
};