Laravel 5.7 Route [role.user] not defined

I can't figure out why it isnt working, i have a page to manage user role, and the only way that i can access my user role page is through browser. I mean.. if i do a view route like that, it just dont work. (Only for role.user). role.index and role.create are working just fine.

I've read about resources and such.. I just dont get it. How can i solve that error. And is there a better way to do it?

my app.blade.php for extends:

<div class="container">
    <nav class="navbar navbar-light">
            <a class="navbar-brand" href="">Permissão</a>
            <a class="navbar-brand" href="">Criar Permissão</a>
            <a class="navbar-brand" href="">Editar Usuário</a>

    </nav>
@yield("content")

and i defined it in my web.php route as resource:

Auth::routes();
Route::get('/home', 'HomeController@index')->name('home');
Route::get('/admin', ['as'=>'admin', 'middleware'=>'role:administrador','uses'=> function(){
    return view ('admin.index');
}
]);
Route::resource ('role', 'RoleController');
Route::resource ('user', 'UserController');

My UserController:

namespace App\Http\Controllers;

use App\User;
use App\Role;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class UserController extends Controller
{
    public function index()
    {
        $users = User::all();
        $allRoles = Role::all();
        return view('admin.role.user', compact(['users','allRoles']));
    }

error:

"Route [role.user] not defined. (View: C:\xampp\htdocs\cms\resources\views\adminLayout\app.blade.php) (View: C:\xampp\htdocs\cms\resources\views\adminLayout\app.blade.php)"

via Chebli Mohamed