Symfony4 - 'app/config/config.yml' is missing? : <p>I am new with Symfony4, and creating Login Form with <a href="https://symfony.com/doc/master/bundles/FOSUserBundle/index.html" rel="noreferrer">FOSUserBundle</a>. And I got stuck at step 5 mentioned in this article. When it says:</p>

<blockquote>
  <p>Add the following configuration to your config.yml file according to
  which type of datastore you are using.</p>
</blockquote>

<pre><code># app/config/config.yml
fos_user:
    db_driver: orm # other valid values are 'mongodb' and 'couchdb'
    firewall_name: main
    user_class: AppBundle\Entity\User
    from_email:
        address: "%mailer_user%"
        sender_name: "%mailer_user%"
</code></pre>

<p>The problem is that in symfony4, there is no <code>app</code> folder, and no simple <code>config.yml</code> file in config folder.</p>

<p>I think this article might be working with older versions, but for Symfony4, it may need some amendments. </p>

<p>Can any body suggest how to fix it?</p>
