Update app.py

app.py

@@ -73,7 +73,7 @@ READER_MODEL="HuggingFaceH4/zephyr-7b-beta"
 
 #retrieval_qa_chat_prompt = hub.pull("langchain-ai/retrieval-qa-chat")
 
-qa_chat_prompt = ChatPromptTemplate.from_template("""Answer the following question based only on the provided context:
+qa_chat_prompt = ChatPromptTemplate.from_messages("""Answer the following question based only on the provided context:
 
 <context>
 {context}