how to fix this problem "Undefined variable: category"?

faced such a problem I do not know what to do? CategoriesConroller.php

class CategoriesController extends Controller
{
 public function index()
{
    $categories = Category::all();

    return view('admin.categories.index', ['categories' =>   
$categories]);
}

}

index.blade.php

  foreach ($categories as $category)
              <tr>
                <td></td>
                <td></td>
                <td><a href="edit.html" class="fa fa-pencil"></a> <a href="#" class="fa fa-remove"></a></td>
              </tr>
             endforeach

via Chebli Mohamed