title: Extremely slow backoffice
body: <p>I have recently updated my prestashop to 1.6, and since then, I'm experiencing performance issues.
  I have activated error messages in order to check if everything was ok and I found some messages telling me the following:</p>
  
  <pre><code>Notice on line 1279 en archivo /var/www/vhosts/vallesonline.es/httpdocs/modules/inixframe/InixModule.php
  [8] Undefined property: stdClass::$dist_chanel
  
  Notice on line 1280 en archivo /var/www/vhosts/vallesonline.es/httpdocs/modules/inixframe/InixModule.php
  [8] Undefined property: stdClass::$dist_chanel
  </code></pre>
  
  <p>The lines 1279 and 1280 are the author and dist_chanel ones:</p>
  
  <pre><code>$module_data = array(
  'name'=&gt; $module-&gt;name,
  'version'=&gt; $module-&gt;version,
  'author'=&gt;$module-&gt;dist_chanel,
  'dist_chanel'=&gt; $module-&gt;dist_chanel,
  );
  </code></pre>
  
  <p>It is evident that there is some problem with some modules that do not have dist_chanel property, so I check if the module has it or not in order to bypass the problem. If the var is not defined, I set author and diet_channel to ''.</p>
  
  <p>Then, at the end of my log file I found the following:</p>
  
  <pre><code>Notice on line 1957 en archivo /var/www/vhosts/vallesonline.es/httpdocs/classes/Tools.php
  [8] Array to string conversion
  </code></pre>
  
  <p>The line is the following:</p>
  
  <pre><code>curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
  </code></pre>
  
  <p>In which post_data contains the data created on InixModule.php (the var module_data).</p>
  
  <p>I think this problem is causing the performance issues on my prestashop and that has something to do with the update (which I did using 1-click-update).</p>
  
  <p>Any help would be greatly appreciated.</p>