Update app.py

app.py

@@ -56,7 +56,7 @@ def sum_chain_l1(text, p_bar):
             docs.append(answer)
     return docs
 
-def sum_chain_l2_deprecated(docs, pbar):
+def sum_chain_l2_deprecated(docs, p_bar):
     hist = docs[0]
     for doc in p_bar(docs[1:]):
         for answer in model.generate_iterate(prompt+"\n"+hist+"\n"+doc,