Update app.py

app.py

@@ -128,7 +128,6 @@ chat_prompt = ChatPromptTemplate.from_messages([("system",
     " (Answer only from retrieval. Only cite sources that are used. Make your response conversational.)"
 ), ('user', '{input}')])
 
-stream_chain = chat_prompt| RPrint() | instruct_llm | StrOutputParser()
 
 def RPrint(preface=""):
     """Simple passthrough "prints, then returns" chain"""
@@ -146,6 +145,8 @@ retrieval_chain = (
     | RPrint()
 )
 
+stream_chain = chat_prompt| RPrint() | instruct_llm | StrOutputParser()
+
 def chat_gen(message, history=[], return_buffer=True):
     buffer = ""
     ## First perform the retrieval based on the input message