Index: lams_tool_whiteboard/src/java/org/lamsfoundation/lams/tool/whiteboard/service/WhiteboardService.java
===================================================================
diff -u -r8c6ccd715c5bbd55bacc9a0f112d2ee9a870aa3d -rfea10410d4806bc95b22b8dbf15c0650bdac4fcd
--- lams_tool_whiteboard/src/java/org/lamsfoundation/lams/tool/whiteboard/service/WhiteboardService.java	(.../WhiteboardService.java)	(revision 8c6ccd715c5bbd55bacc9a0f112d2ee9a870aa3d)
+++ lams_tool_whiteboard/src/java/org/lamsfoundation/lams/tool/whiteboard/service/WhiteboardService.java	(.../WhiteboardService.java)	(revision fea10410d4806bc95b22b8dbf15c0650bdac4fcd)
@@ -335,7 +335,7 @@
 	Long userSessionId =
 		ratingUserId == null || !whiteboard.isGalleryWalkStarted() || !whiteboard.isGalleryWalkEditEnabled()
 			? null
-			: getUserByIDAndContent(ratingUserId, contentId).getSession().getSessionId();
+			: getLearnerByIDAndContent(ratingUserId, contentId).getSession().getSessionId();
 	for (WhiteboardSession session : sessionList) {
 	    // one new group for one session.
 	    SessionDTO group = new SessionDTO();