Fix location problem

common/lib/xmodule/xmodule/combined_open_ended_module.py

@@ -77,6 +77,7 @@ class CombinedOpenEndedModule(XModule):
         # element.
         # Scores are on scale from 0 to max_score
         system.set('location', location)
+        log.debug(system.location)
         self.current_task_number = instance_state.get('current_task_number', 0)
         self.task_states= instance_state.get('task_states', [])
 

common/lib/xmodule/xmodule/open_ended_module.py

@@ -179,9 +179,9 @@ class OpenEndedModule():
 
         self.initial_display = find_with_default(oeparam, 'initial_display', '')
         self.answer = find_with_default(oeparam, 'answer_display', 'No answer given.')
-
+        
         parsed_grader_payload.update({
-            'location' : system.location,
+            'location' : system.location.url(),
             'course_id' : system.course_id,
             'prompt' : prompt_string,
             'rubric' : rubric_string,