Upload images in laravel 5

I'm facing a problem in uploading images to server in laravel 5, the problem is some images uploaded normally, and other images breaks the server, and I got this message

       The specified URL cannot be found.

I'm using this route in routes.php

     Route::any('/{lang}/REGISTER','createAccountController@index');

My class is :

   namespace App\Http\Controllers;
   use App\Http\Controllers\Controller;
   use App\User;
   use Illuminate\Foundation\Application;

    use App\Http\Requests;
    use Request;
    use Route;
    use Illuminate\Support\Facades\Redirect;
    use Illuminate\Support\Facades\Session;
    use Illuminate\Support\Facades\Lang;
    use App\ImageCircleCrop;

  class createAccountController extends Controller
 {
    public function index($lang,Request $request){
             // process form data here
     }
}

I don't get any error messages in server logs, in fact, the application does not reach the controller code at all. Any help?

via Chebli Mohamed