How To Solve This Trying to get property of non-object Error In Laravel like view "home" alredy exits and everything is fine about it?

ErrorException in line 82: Trying to get property of non-object (View: D:\xampp2\htdocs\onecreativeweb-benzin.bg-website\resources\views\home.blade.php)

enter code here
My route: Route::get('/', ['as' => 'home', 'uses' => 'Home\HomeController@index']);

HomeController.php:

ContactMessageRepository $contactMessageRepo {
    private $contactContentRepo;
    private $homeContentRepo;

   private $advantageRepo;
   private $slidersRepo;
   private $benefitsRepo;
   ...
}

public function __construct(

   AdvantageRepository $advantageRepo,
   SliderRepository $slidersRepo,
   PartnerRepository $partnerRepo,
   BenefitRepository $benefitsRepo,
   CategoryRepository $categoryRepo,
   NewsRepository $newsRepo,

public function index()
{
  return view('home')
     ->with('contacts', $this->contactContentRepo->first())
     ->with('homeContent', $this->homeContentRepo->first())
     ->with('sliders', $this->slidersRepo->getAllWithTranslation())
     ->with('benefits', $this->benefitsRepo->getAllWithTranslation())
     ->with('advantages', $this->advantageRepo->getModel()->where('show_on_home_page', '=', '1')->get());
}

via Chebli Mohamed