commented out the memory buffer

app.py

@@ -70,7 +70,8 @@ def handle_query(query):
         )
     ]
     text_qa_template = ChatPromptTemplate.from_messages(chat_text_qa_msgs)
-    query_engine = index.as_query_engine(text_qa_template=text_qa_template, memory=memory)
+    # query_engine = index.as_query_engine(text_qa_template=text_qa_template, memory=memory)
+    query_engine = index.as_query_engine(text_qa_template=text_qa_template)
     answer = query_engine.query(query)
     
     if hasattr(answer, 'response'):