Update app.py

app.py

@@ -81,7 +81,7 @@ def start(prompt, board, api_key):
 
     # for content in contents:
         time.sleep(0.005)
-        content = chunk["choices"][0].get("delta", {}).get("content")
+        content = chunk.choices[0].delta.content or ""
         if content is not None:
             out += content
             print(content, end="")