diff --git a/app/models/activity_extractor.rb b/app/models/activity_extractor.rb
index 931277d..65ef0fc 100644
--- a/app/models/activity_extractor.rb
+++ b/app/models/activity_extractor.rb
@@ -79,8 +79,7 @@ def extract_activities!
         entry: self.record,
         title: activity["title"],
         summary: activity["summary"],
-        published_at: self.record.published_at,
-        scraped_at: self.record.scraped_at
+        published_at: self.record.published_at
       )
 
       activity["impacted_promises"].each do |impacted_promise|
diff --git a/app/models/chat.rb b/app/models/chat.rb
index 08290ec..dba2bc4 100644
--- a/app/models/chat.rb
+++ b/app/models/chat.rb
@@ -19,6 +19,10 @@ def extract!(prompt)
 
     attributes = JSON.parse(message.content)
 
+    if attributes.nil?
+      raise "Nil response from LLM, message: #{message.inspect}"
+    end
+
     self.update(attributes)
   end
 end