Update app.py

app.py

@@ -62,7 +62,8 @@ def start(prompt, board, api_key):
     # num_tokens = encoding.encode(string)
     content = ""
     openai.api_key = api_key
-    for chunk in openai.ChatCompletion.create(
+    
+    for chunk in chat_completion = client.chat.completions.create(
         model="gpt-4o",
         messages=[{
             "role": "user",