Update app.py

app.py

@@ -74,7 +74,7 @@ def chat_query(question, history):
     qa = ConversationalRetrievalChain.from_llm(llm, retriever=retriever, return_source_documents=True)
 
     # Replace input() with question variable for Gradio
-    result = qa({"question": query, "chat_history" : history})
+    result = qa({"question": query, "chat_history" : chat_history})
 
     
     source_docs = result["source_documents"]