View [admin.users.index] not found. in local it works for me, but in the server of heroku not

Hello everyone, I just deployed an app of laravel 5.5 in heroku, I have these routes registered in web.php

<?php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {
    return view('welcome');
});

// Authentication Routes...
Route::get('login', 'Auth\LoginController@showLoginForm')->name('login');
Route::post('login', 'Auth\LoginController@login');
Route::post('logout', 'Auth\LoginController@logout')->name('logout');

// Registration Routes...
// Route::get('register', 'Auth\RegisterController@showRegistrationForm')->name('register');
// Route::post('register', 'Auth\RegisterController@register');

// Password Reset Routes...
Route::get('password/reset', 'Auth\ForgotPasswordController@showLinkRequestForm')->name('password.request');
Route::post('password/email', 'Auth\ForgotPasswordController@sendResetLinkEmail')->name('password.email');
Route::get('password/reset/{token}', 'Auth\ResetPasswordController@showResetForm')->name('password.reset');
Route::post('password/reset', 'Auth\ResetPasswordController@reset');

Route::get('/home', 'HomeController@index')->name('home');

Route::get('/administrador', function() {
  return view('admin.dashboard');
})->middleware('auth');

Route::group([
  'prefix' => 'admin',
  'middleware' => 'auth'],
function(){
  Route::resource('users', 'UserController');
  Route::resource('cuadres', 'CuadreController');
  Route::resource('pagos', 'PagoController');
  Route::resource('datafonos', 'DatafonoController');
});

for admin routes I have an admin prefix like in the views folder I have a folder named "admin" admin> users> index.blade.php

locally all this works for me, example app.test/admin/users works

but when I do the same thing on the server it gives me this error ##View [admin.users.index] not found.

this is my controller for users

<?php

namespace App\Http\Controllers;

use App\User;
use Illuminate\Http\Request;

class UserController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
      $users = User::all();
      return view('admin.users.index', compact('users'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
      return view('admin.users.create');
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
      User::create($request->all());

      return redirect()->route('users.index')->with('info','Se ha creado el usuario con éxito');
    }

    /**
     * Display the specified resource.
     *
     * @param  \App\User  $user
     * @return \Illuminate\Http\Response
     */
    public function show(User $user)
    {
      return view('admin.users.show', compact('user'));
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  \App\User  $user
     * @return \Illuminate\Http\Response
     */
    public function edit(User $user)
    {
      return view('admin.users.edit', compact('user'));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \App\User  $user
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, User $user)
    {
      $user->update($request->all());
      return redirect()->route('users.index')->with('info', 'Se ha editado el usuario con éxito');
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  \App\User  $user
     * @return \Illuminate\Http\Response
     */
    public function destroy(User $user)
    {
      if($user->id === auth()->user()->id){
        return back()->with('error', 'No te puedes eliminar a ti mismo');
      }

      $user->delete();
      return back()->with('info', 'Se ha eliminado el usuario con éxito');
    }
}

thanks in advance, I remain attentive