PM-3737 "0018694: Error when using 'Jump to' functionality..." SOLVED

Issue:
    0018694: Error when using "Jump to" functionality for Unassigned cases
Cause:
    La variable TASK esta vacia cuando se usa "Jump to"
Solution:
    Se agrega validacion para evitar hacer un query si la variable TASK esta vacia

workflow/engine/methods/cases/ajaxListener.php

@@ -209,7 +209,7 @@ class Ajax
                 break;
         }
 
-        if ($_SESSION['TASK'] != '-1') {
+        if ($_SESSION["TASK"] != "" && $_SESSION["TASK"] != "-1") {
             $oTask = new Task();
             $aTask = $oTask->load($_SESSION['TASK']);
             if ($aTask['TAS_TYPE'] == 'ADHOC') {