twig loaded in index

public/index.php

@@ -15,6 +15,11 @@ require __DIR__ . '/../vendor/autoload.php';
 
 $app = AppFactory::create();
 
+$loader = new \Twig\Loader\FilesystemLoader('../templates');
+$twig = new \Twig\Environment($loader, [
+    'cache' => '../cache',
+]);
+
 ini_set('display_errors', 'Off');
 
 function addNavbar($response)