title: Getting exception in browser with elgg on Ubuntu 16.04
body: <p>Using Ubuntu 16.04 and PHP 7.0 with webserver located at <code>/home/me/Sites</code>.</p>
  
  <p>Got the message:</p>
  
  <h2>exception:title
  An unrecoverable error has occurred and has been logged...</h2>
  
  <p>Apache, PHP, and MySQL all work, based on another web installation. Tried installing by downloading elgg files to my webserver's root. Didn't work. Deleted all elgg files and then tried using <code>composer</code> to install. </p>
  
  <p>No error messages appear in <code>/var/log/apache2/error.log</code> when trying to load the site. </p>
  
  <p>While using <code>composer create-project elgg/starter-project:dev-master</code>, found that php-gd, php-xml, and jquery-imgareaselect were missing. After installing these plug-ins/modules installation appeared successful on Terminal. But still got this exception on the browser. </p>
  
  <p>Changed the <code>.htaccess</code> file so that Apache would direct to the sub-directory of my localhost. Still not working. There is no settings.php file, nor a settings.example.php file. Tried <code>composer install</code> again, which showed no errors. Also no errors show in <code>error.log</code>.</p>