Added main controller.

composer.json

@@ -5,7 +5,7 @@
         "php": "^7.1.3",
         "ext-ctype": "*",
         "ext-iconv": "*",
-        "sensio/framework-extra-bundle": "^5.1",
+        "sensio/framework-extra-bundle": "^5.5",
         "symfony/apache-pack": "^1.0",
         "symfony/asset": "4.4.*",
         "symfony/console": "4.4.*",
@@ -23,7 +23,7 @@
         "symfony/security-bundle": "4.4.*",
         "symfony/serializer-pack": "*",
         "symfony/translation": "4.4.*",
-        "symfony/twig-pack": "*",
+        "symfony/twig-pack": "^1.0",
         "symfony/validator": "4.4.*",
         "symfony/web-link": "4.4.*",
         "symfony/yaml": "4.4.*"

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "bbb0d7b62b68b9ef9d037c916211df35",
+    "content-hash": "d6e8bc8b46d0e946a35999599cf79156",
     "packages": [
         {
             "name": "doctrine/annotations",

src/Controller/MainController.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+class MainController extends AbstractController
+{
+    /**
+     * @Route("/")
+     */
+    public function index(): Response
+    {
+        $number = random_int(0, 100);
+
+        return $this->render('main.twig', [
+            'number' => $number,
+        ]);
+    }
+}

templates/main.twig

@@ -0,0 +1,5 @@
+{% extends 'base.html.twig' %}
+
+{% block body %}
+<h1>Your lucky number is {{ number }}</h1>
+{% endblock %}