title: Prestashop 1.7.3.4 - Friendly URL doesn't work despite rewrite active
body: <p>I'm running PS 1.7.3.4 on ubuntu 16.04.4 x64 with LAMP (php 7.1) </p>
  
  <p>I've enabled friendly URL right after the installation of my shop. From index.php it then changed to /en/ yielding in </p>
  
  <blockquote>
    <p>Not Found</p>
    
    <p>The requested URL /en/ was not found on this server.</p>
  </blockquote>
  
  <p>rewrite is enabled and active. The .htaccess reads </p>
  
  <pre><code>&lt;IFMODULE mod_rewrite.c&gt;
  &lt;IFMODULE mod_env.c&gt;
  SetEnv HTTP_MOD_REWRITE On
  &lt;/IFMODULE&gt;
  
  RewriteEngine on
  </code></pre>
  
  <p>and was recreated by disabling / enabling friendly urls. </p>
  
  <pre><code>&gt; a2emod rewrite
  </code></pre>
  
  <p>yields in Module rewrite already enabled. The URL is the servers IP address. No SSL used. </p>