title: Blade laravel - yield and content
body: <p>after some unuseful research I have to ask this.
  I'm using laravel 5.6</p>
  
  <p>I have my controller where I have </p>
  
  <pre><code>public function index()
  {
      return view('layout.app');
  }
  </code></pre>
  
  <p>where app.blade.php looks like:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
      &lt;title&gt;App Name - @yield('title')&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  @section('sidebar')
      This is the master sidebar.
  @show
  
  &lt;div class="container"&gt;
      @yield('content')
  &lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>and child.blade.php is:</p>
  
  <pre><code>@extends('app')
  
  @section('title', 'Page Title')
  
  @section('sidebar')
      @parent
  
      &lt;p&gt;This is appended to the master sidebar.&lt;/p&gt;
  @endsection
  
  @section('content')
      &lt;p&gt;This is my body content.&lt;/p&gt;
  @endsection
  </code></pre>
  
  <p>This files looks like laravel tutorial and they are, I tried with my own files and still got the same error, so to simplify I'm using laravel's ones.</p>
  
  <p>So the thing is I'm never seeing child.blade.php 
  Is there any common error where am I stuck?</p>
  
  <p>I did this before and it went really well, I built the app really quick but now I can't find a solution.</p>