chore: add log on catched exception

liferay-plugins-sdk-6.2/portlets/portos-bo-portlet/docroot/WEB-INF/src/it/mwg/sismica/bo/util/ManutenzioneDatabase.java

@@ -1089,7 +1089,9 @@ public class ManutenzioneDatabase {
 					try {
 						instance = WorkflowInstanceManagerUtil.getWorkflowInstance(link.getCompanyId(),
 								link.getWorkflowInstanceId());
-					} catch (PortalException e) {}
+					} catch (PortalException e) {
+						_log.error(e, e);
+					}
 					if (Validator.isNull(instance)) {
 						WorkflowInstanceLinkLocalServiceUtil.deleteWorkflowInstanceLink(link);
 					} else {