create an action for user 's account

src/Application/Actions/User/ViewAccountAction.php

+<?php
+declare(strict_types=1);
+
+namespace App\Application\Actions\User;
+
+use Psr\Http\Message\ResponseInterface as Response;
+use App\Domain\User\UserNotFoundException;
+
+class ViewAccountAction extends UserAction
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function action(): Response
+    {
+
+        if (!isset($_SESSION['userId'])) {
+            return $this->response
+                ->withHeader('Location', '/login')
+                ->withStatus(302);
+        }
+        
+        $user = $this->userRepository->find($_SESSION['userId']);
+
+        if (!isset($user)) {
+            throw new UserNotFoundException();
+        }
+        $this->logger->info("User of id `{$user->getId()}` was viewed.");
+
+        return $this->twig->render($this->response, "/user/user_profile.twig", ["user" => $user, "id"=> $user->getId()]);
+    }
+}