Better error checking with Analytics are unavailable.

lms/djangoapps/instructor/views.py

@@ -605,7 +605,7 @@ def instructor_dashboard(request, course_id):
             return json.loads(res.content, object_pairs_hook=OrderedDict)
         else:
             log.error("Error fetching %s, code: %s, msg: %s",
-                      (url, res.status_code, res.content))
+                      url, res.status_code, res.content)
         return None
 
     analytics_results = {}

lms/templates/courseware/instructor_dashboard.html

@@ -371,6 +371,10 @@ function goto( mode)
 
 %if modeflag.get('Analytics'):
 
+  %if not any(analytics_results.values()):
+    <p>No Analytics are available at this time.</p>
+  %endif
+
   %if analytics_results.get("StudentsEnrolled"):
     <p>
       Students enrolled: