Update app.py

app.py

@@ -19,7 +19,7 @@ load_dotenv()
 HF_token = os.environ["HF_TOKEN"]
 vectorstores = process_pdf()
 
-async def chat(query,history,audience,sources,reports):
+async def chat(query,history,sources,reports):
     """taking a query and a message history, use a pipeline (reformulation, retriever, answering) to yield a tuple of:
     (messages in gradio format, messages in langchain format, source documents)"""