add logs in get_problem_responses

lms/djangoapps/instructor/static/instructor/ProblemBrowser/data/actions/problemResponses.js

@@ -79,7 +79,7 @@ const createProblemResponsesReportTask = (
     })
     .then(
       json => dispatch(getTaskStatus(taskStatusEndpoint, json.task_id)),
-      () => dispatch(problemResponsesFailure(gettext('Unable to submit request to generate report.'))),
+      err => dispatch(problemResponsesFailure(gettext('Unable to submit request to generate report.'))), // eslint-disable-line no-unused-vars
     );
 };
 

lms/djangoapps/instructor/views/api.py

@@ -1055,6 +1055,7 @@ def get_problem_responses(request, course_id):
         for problem_location in problem_locations.split(','):
             problem_key = UsageKey.from_string(problem_location).map_into_course(course_key)
     except InvalidKeyError:
+        log.exception("ProblemResponsesError: Location: %s", problem_locations)
         return JsonResponseBadRequest(_("Could not find problem with this location."))
 
     task = task_api.submit_calculate_problem_responses_csv(