Phalcon Backend Controller Not Loading - php

Question

I'm New in Phalcon framework. I'm testing my first multi module phalcon project with : Phalcon-4.0.3, i have install psr and i'm following example from phalcon documentation. everything is normal without volt engine but my backend module or controller not responding and i didnt get any error & the problem is i cant redirect to beckend module or controller if any expert please solve my issue!!
[index.php]
use Phalcon\Di\FactoryDefault;
use Phalcon\Mvc\Router;
use Phalcon\Mvc\Application;
$di = new FactoryDefault();
$di->set('router',function () {
$router = new Router(false);
$router->setDefaultModule('frontend');
$router->add('/backend',
[
'module' => 'backend',
'controller' => 'index',
'action' => 'index',
]
);
return $router;
}
);
$application = new Application($di);
$application->registerModules(
[
'frontend' => [
'className' => 'Multiple\Frontend\Module',//\Multiple\Frontend\Module::class,
'path' => '../apps/frontend/Module.php',
],
'backend' => [
'className' => 'Multiple\Backend\Module',//\Multiple\Backend\Module::class,
'path' => '../apps/backend/Module.php',
],
]
);
try{
$response = $application->handle($_SERVER["REQUEST_URI"]);
$response->send();
}catch (\Throwable $e) {
echo $e->getMessage();
}
[Backend Module]
namespace Multiple\Backend;
use Phalcon\Loader;
use Phalcon\Mvc\View;
use Phalcon\Mvc\View\Engine\Volt;
use Phalcon\Di\DiInterface;
use Phalcon\Mvc\Dispatcher;
use Phalcon\Mvc\ModuleDefinitionInterface;
class Module implements ModuleDefinitionInterface
{
public function registerAutoloaders(DiInterface $di = null)
{
$loader = new Loader();
$loader->registerClasses([
'Multiple\Backend\Module' =>'../apps/backend/Module.php',
]);
$loader->registerNamespaces(
[
'Multiple\Backend\Controllers' => '../apps/backend/controllers/',
'Multiple\Backend\Models' => '../apps/backend/models/',
]
);
$loader->register();
}
public function registerServices(DiInterface $di)
{
$di->set('dispatcher',function () {
$dispatcher = new Dispatcher();
$dispatcher->setDefaultNamespace('Multiple\Backend\Controllers');
return $dispatcher;
}
);
$di->set('view',function () {
$view = new View();
$view->setViewsDir('../apps/backend/views/');
return $view;
}
);
}
}
[Frontend Module]
namespace Multiple\Frontend;
use Phalcon\Loader;
use Phalcon\Mvc\View;
use Phalcon\Mvc\View\Engine\Volt;
use Phalcon\Di\DiInterface;
use Phalcon\Mvc\Dispatcher;
use Phalcon\Mvc\ModuleDefinitionInterface;
class Module implements ModuleDefinitionInterface
{
/**
* Register a specific autoloader for the module
*/
public function registerAutoloaders(DiInterface $di = null)
{
$loader = new Loader();
$loader->registerClasses([
'Multiple\Frontend\Module' =>'../apps/frontend/Module.php',
]);
$loader->registerNamespaces([
'Multiple\Frontend\Controllers' => '../apps/frontend/controllers/',
'Multiple\Frontend\Models' => '../apps/frontend/models/',
]);
$loader->register();
}
/**
* Register specific services for the module
*/
public function registerServices(DiInterface $di)
{
// Registering a dispatcher
$di->set('dispatcher',function () {
$dispatcher = new Dispatcher();
$dispatcher->setDefaultNamespace('Multiple\Frontend\Controllers');
return $dispatcher;
}
);
// Registering the view component
$di->set('view',function () {
$view = new View();
$view->setViewsDir('../apps/frontend/views/');
return $view;
}
);
}
}