diff --git a/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/server/DownloadServlet.java b/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/server/DownloadServlet.java
index e476823..b5e2440 100644
--- a/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/server/DownloadServlet.java
+++ b/src/main/java/org/gcube/portlets/widgets/dataminermanagerwidget/server/DownloadServlet.java
@@ -88,6 +88,7 @@ public class DownloadServlet extends HttpServlet {
 			ServiceCredentials serviceCredentials = SessionUtil.getServiceCredentials(req, scopeGroupId);
 			StorageUtil filesStorage = new StorageUtil();
 			ItemDownload itemDownload = filesStorage.getItemDownload(serviceCredentials.getUserName(), itemId);
+			logger.debug("ItemDownload: "+itemDownload);
 			if (itemDownload == null) {
 				logger.error("This type of item does not support download operation");
 				throw new ServletException("This type of item does not support download operation");