Update app.py

app.py

@@ -52,13 +52,15 @@ def respond(
 
     messages.append({"role": "user", "content": message})
 
+    output = ""
     try:
         print("messages", messages)
         stream = agent.run(messages=messages, stream=True)
 
         for chunk in stream:
             print("chunk", chunk)
-            yield chunk.choices[0].delta.content
+            output += chunk.content
+            yield output
 
     except Exception as e:
         print(f"[Error] {e}")