Update app.py

app.py

@@ -206,6 +206,7 @@ def getRAGChain(customerName, customerDistrict, custDetailsPresent, vectordb,llm
         chain_type='stuff',
         retriever=getRetriever(vectordb),
         #retriever=vectordb.as_retriever(),
+        memory = ConversationBufferWindowMemory(k=3, memory_key="history", input_key="question"),
         verbose=False,
         chain_type_kwargs={
             "verbose": False,