title: Laravel db:seed success but no data in my database
body: <p>I tried to make simple seed in laravel, but when I did "php artisan db:seed", it didn't fill my field.</p>
  
  <p>I made my Categories seeder file 
  this is my Categories seeder file :</p>
  
  <pre><code>class CategoryTableSeeder extends Seeder
  {
      public function run()
      {
          $categori1 = new Category;
          $categori1-&gt;name = "Books";
          $categori1-&gt;save();
          $categori2 = new Category;
          $categori2-&gt;name = "Backpacks";
          $categori2-&gt;save();
  
      }
  }
  </code></pre>
  
  <p>This is my Category model :</p>
  
  <pre><code>&lt;?php
  
  namespace App;
  
  use Illuminate\Database\Eloquent\Model;
  
  class Category extends Model
  {
      //
  }
  </code></pre>
  
  <p>And this is part of my Categories table migration file :</p>
  
  <pre><code>    public function up()
      {
          Schema::create('categories', function (Blueprint $table) {
              $table-&gt;bigIncrements('id');
              $table-&gt;string('name');
              $table-&gt;timestamps();
          });
      }
  </code></pre>