Update app.py

app.py

@@ -32,7 +32,7 @@ def user(message, history):
 def call_nvidia_api(history, system_message, max_tokens, temperature, top_p):
  """Calls the NVIDIA API to generate a response."""
  messages = [{"role": "system", "content": system_message}]
- messages.extend([{"role": role, "content": content} for role, content in history])
+ messages.extend([{"role": item["role"], "content": item["content"]} for item in history])
 
  payload = {
  "messages": messages,