Hi,
I was following the instructions on https://symfony.com/doc/5.4/the-fast-track/en/3-zero.html and next pages.

I'm at the step regarding creating a new controller., so I did symfony console make:controller ConferenceController

Then I tried to open https://localhost:8000/conference and saw the "No route found for "GET https://localhost:8000/conference""

The controller looks like this:

<?php

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class ConferenceController extends AbstractController
{
    #[Route('/conference', name: 'app_conference')]
    public function index(): Response
    {
        return $this->render('conference/index.html.twig', [
            'controller_name' => 'ConferenceController',
        ]);
    }
}

I tried to clear cache and restart server, nothing worked. Finally I found somewhere (not in the book itself, and actually the problem was different): composer require annotations.

This created this file: "config/routes/annotations.yaml" which looks like this:

controllers:
    resource: ../../src/Controller/
    type: annotation
kernel:
    resource: ../../src/Kernel.php
    type: annotation

And... it worked. But why? I mean - Why did I have to do this, and what does 'annotations' from Doctrine have to do with routing in Symfony?

This book was supposed to guide me step by step into the intricacies of Symfony, and yet I got stuck on such a simple step :(

BTW, I know there is a book for 6.2 but I am supposed to learn 5.4. It's not that old AFAIK.

I'm on the verge of madness... this is my second attempt with Symfony, and also my second with the book "The Fast Track,"