Error when listing routes in a Api Laravel

I am developing an api rest using laravel and to create this api I am using the tutorial:

• link
• link
• link

But when you run the command:

php artisan route:list

I get the following error:

 ReflectionException:Class App\Http\Controllers\pagesController does not exist

 at /var/www/html/freelance/HQ Alma/api/vendor/laravel/framework/src/Illuminate/Container/Container.php:7 
79
775| if ($concrete instanceof Closure) {
776|     return $concrete($this, $this->getLastParameterOverride());
777|}
778|
779|$reflector = new ReflectionClass($concrete);
780|
781|// If the type is not instantiable, the developer is attempting to resolve
782|// an abstract type such as an Interface of Abstract Class and there is
783|// no binding registered for the abstractions so we need to bail out.

 Exception trace:

 1 ReflectionClass::__construct("App\Http\Controllers\pagesController")
  /var/www/html/freelance/HQ Alma/api/vendor/laravel/framework/src/Illuminate/Container/Container.php:779

2 Illuminate\Container\Container::build("App\Http\Controllers\pagesController")
  /var/www/html/freelance/HQ Alma/api/vendor/laravel/framework/src/Illuminate/Container/Container.php:658

Please use the argument -v to see more details.

My routes are these:

Route::group(array('prefix' => 'hqi'), function()
{

  Route::get('/', function () {
     return response()->json(['message' => 'HQI API', 'status' => 
     'Connected']);;
  });

  Route::resource('users', 'UserController');
  Route::resource('pages', 'PagesController');
  Route::resource('palestra', 'PalestrasDivulgacaoController');
});

Route::get('/', function () {
   return redirect('api');
});

Would anyone know what it could be?