Some errors in drupal log
Created by: dragonjon
It's a debugging warning I do not know if it will matter
Strict warning: Declaration of CRM_Core_Payment_Redsys::singleton() should be compatible with & CRM_Core_Payment::singleton($mode, &$paymentProcessor, &$paymentForm = NULL, $force = false) en CRM_Core_Payment::singleton() (línea 115 de /public_html/sites/all/modules/civicrm/CRM/Core/Payment.php).
Thanks