Update app.py

app.py

@@ -19,7 +19,7 @@ def get_response(message, chat_history, model_choice, api_key):
     chat_history.append({'role':"user","content":message})
     reply =generate_answer(message,model_choice,api_key)
 
-    chat_history.append(["role":"assistant","content": reply])
+    chat_history.append({"role":"assistant","content": reply})
     return reply, chat_history
 # Gradio app
 with gr.Blocks(css=custom_css) as app: