There is no extension able to load the configuration for "router" (Symfony2.8 micro-framework)
<p>I just installed Symfony 2.8 micro-framework using this tutorial:</p>

<p><a href="https://knpuniversity.com/screencast/micro-symfony/bootstrap#play" rel="nofollow">https://knpuniversity.com/screencast/micro-symfony/bootstrap#play</a></p>

<p>but in the end after configuring config.yml</p>

<p>framework:</p>

<pre><code>secret: ABC123
</code></pre>

<p>router:</p>

<pre><code>resource: %kernel.root_dir%/config/routing.yml
</code></pre>

<p>templating:</p>

<pre><code>engines: [twig]
</code></pre>

<p>i got the Symfony error</p>

<p>InvalidArgumentException in YamlFileLoader.php line 390: There is no extension able to load the configuration for "router" (in C:\xampp\htdocs\smmicro1/config/config.yml). Looked for namespace "router", found "framework", "twig", "sensio_framework_extra"</p>

<p>if i delete these router part lines:</p>

<p>router:</p>

<pre><code>resource: %kernel.root_dir%/config/routing.yml
</code></pre>

<p>templating:</p>

<pre><code>engines: [twig]
</code></pre>

<p>Symfony starts fine, but with the message:</p>

<p>Unable to find the controller for path "/". The route is wrongly configured.   </p>

<p>How to configure everything to work properly ?</p>

<p>Thank you!</p>