Merge remote-tracking branch 'origin/develop' into develop

ems-engine/src/main/java/it/integry/ems/activity/service/ActivityService.java

@@ -1003,6 +1003,8 @@ public class ActivityService {
         }
 
         List<ActivityDTO> activityDTOS = UtilityDB.executeSimpleQueryDTO(multiDBTransactionManager.getPrimaryConnection(), sql, ActivityDTO.class);
+
+        if (activityDTOS != null) {
             List<String> elencoId = Stream.of(activityDTOS).map(ActivityDTO::getIdAttivita).toList();
             sql =
                     "SELECT stb_activity.parent_activity_id,\n" +
@@ -1073,6 +1075,7 @@ public class ActivityService {
                     }
                 }
             }
+        }
 
         return activityDTOS;
     }