diff --git a/src/main/java/org/gcube/common/storagehub/client/dsl/ItemContainer.java b/src/main/java/org/gcube/common/storagehub/client/dsl/ItemContainer.java
index 5f5752f..cd05b9c 100644
--- a/src/main/java/org/gcube/common/storagehub/client/dsl/ItemContainer.java
+++ b/src/main/java/org/gcube/common/storagehub/client/dsl/ItemContainer.java
@@ -17,6 +17,7 @@ public abstract class ItemContainer<I extends Item> {
 	
 	protected ItemContainer(ItemManagerClient itemclient, I item) {
 		this.itemclient = itemclient;
+		this.item = item;
 		this.itemId = item.getId();
 	}
 	
diff --git a/src/main/java/org/gcube/common/storagehub/client/dsl/ListResolver.java b/src/main/java/org/gcube/common/storagehub/client/dsl/ListResolver.java
index 13a2094..eb85ec3 100644
--- a/src/main/java/org/gcube/common/storagehub/client/dsl/ListResolver.java
+++ b/src/main/java/org/gcube/common/storagehub/client/dsl/ListResolver.java
@@ -1,6 +1,7 @@
 package org.gcube.common.storagehub.client.dsl;
 
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -42,7 +43,8 @@ public class ListResolver {
 	
 	
 	public List<? extends Item> getItems(){
-		return retriever.getList(onlyType, includeHidden,  excludes.toArray(new String[excludes.size()]));
+		List<? extends Item> list = retriever.getList(onlyType, includeHidden,  excludes.toArray(new String[excludes.size()]));
+		return list==null? Collections.emptyList():list;
 	}
 	
 	public List<ItemContainer<? extends Item>> getContainers(){
diff --git a/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java b/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java
index 1d77701..46f4112 100644
--- a/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java
+++ b/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultItemManager.java
@@ -481,6 +481,7 @@ public class DefaultItemManager implements ItemManagerClient {
 				if (excludeNodes !=null && excludeNodes.length>0)
 					params.put("exclude",excludeNodes);
 				
+				System.out.println("calling "+ myManager.queryParams(params).toString());				
 				GXInboundResponse response = myManager.queryParams(params).get();
 				
 				if (response.isErrorResponse()) {