"Controller not found" internally when "ajax-tab.php" is called when I try to upload image to the pr

[templaries]

Prestashop version: 1.5.6.2

 

I have a got a strange error when I try to upload a image to a product.

 

On the backend I saw a red panel that says "undefined". Looking for the error I have debuged the execution of the program. I go to the javascript function when the upload image function is called.

 

js/filesuploader.js

 

this is query url used in the code:

ajax-tab.php?id_product=1158&id_category=0&token=671fbce19deb7578aff439f10a0b1e31&tab=AdminProducts&action=addImage&ajax=1&legend%5B1%5D=test&legend%5B2%5D=test&legend%5B3%5D=test&qqfile=20170404_105228.jpg

 

The response code like this:

<div class="error"> <span style="float:right">
<a id="hideError" href=""><img alt="X" src="../img/admin/close.png" /></a></span> 
El controlador no encontrado </div> 

I don't know that happens here, the upload image behaviour has been worked without problem until now.

 

Any ideas?