diff --git a/src/org/gcube/vremanagement/vremodeler/impl/ModelerService.java b/src/org/gcube/vremanagement/vremodeler/impl/ModelerService.java
index ff1b8ad..7e17884 100644
--- a/src/org/gcube/vremanagement/vremodeler/impl/ModelerService.java
+++ b/src/org/gcube/vremanagement/vremodeler/impl/ModelerService.java
@@ -197,7 +197,9 @@ public class ModelerService {
 				relatedCollection.add(resRelated.getString(1));
 			}
 
-		}catch(Exception e) {//logger.error("VDL Model: error on DB"); 
+		}catch(Exception e) {
+			logger.error("VDL Model: error on DB");
+			e.printStackTrace();
 			throw new GCUBEFault(e);}
 
 		String toReturn= XMLUtil.PrepareCollectionXML(res, relatedCollection);