ActivityResponse's constructor actually stores its parameter.

I don't know how it even could have worked before.

kepi/bowler_pub/activityresponse.py

@@ -24,7 +24,7 @@ class ActivityResponse(HttpResponse):
     def __init__(self, activity_value):
         super().__init__()
 
-        self.activity_value = None
+        self.activity_value = activity_value
 
     def __str__(self):
         return '<ActivityResponse, wrapping %s>' % (self.activity_value,)