Update app.py

app.py

@@ -33,7 +33,7 @@ def pdf_changes(pdf_doc):
 
     llm = Replicate(
         model="a16z-infra/llama13b-v2-chat:df7690f1994d94e96ad9d568eac121aecf50684a0b0963b25a41cc40061269e5",
-        input={"temperature": 0.4, "max_length": 3000, "length_penalty":0.1, "num_beams":3}
+        input={"temperature": 0.5, "max_length": 3000, "length_penalty":0.2, "num_beams":3}
     )
     global qa 
     qa = ConversationalRetrievalChain.from_llm(
@@ -46,7 +46,7 @@ def pdf_changes(pdf_doc):
 
 def query(history, text):
     result = qa({'question': text, 'chat_history': history})
-    new_history = history + [(text,result['answer'])]
+    new_history = history + [tuple((text,result['answer']))]
     return new_history,""
 
 css="""