updated streaming code

app.py

@@ -41,8 +41,9 @@ def greet(product,description):
     )
     partial_message = ""
     for chunk in response:
-        if chunk.choices[0].delta.content is not None:
-            partial_message = partial_message + chunk.choices[0].delta.content
+        if chunk['choices'][0]['delta']['content'] is not None:
+            partial_message = partial_message + chunk['choices'][0]['delta'].get('content', '')
             yield partial_message
+
 demo = gr.Interface(fn=greet, inputs=["text","text"], outputs="text")
 demo.launch()