title: The markup in the document following the root element must be well-informed
body: <p>Okay, so I am getting the error which was stated in the title. I have searched for people with similar problems but for some reason the answers given to them did not work for me.</p>
  
  <pre><code>    &lt;FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:id="@+id/container"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          tools:context=".MainActivity"
          tools:ignore="MergeRootFrame" /&gt;
  
      &lt;menu xmlns:android="http://schemas.android.com/apk/res/android" &gt;
          &lt;item android:id="@+id/action_settings"
                android:title="@string/action_settings"
                android:showAsAction="never" /&gt;
      &lt;/menu&gt;
  </code></pre>
  
  <p>I get the error at line 9 which is where the menu opening tag is. Please help understand what I am doing wrong. Thank you.</p>