Update app.py

app.py

@@ -9,7 +9,7 @@ import datetime
 # ──────────────────────────────
 # ✅ GitHubModelLLM (그대로 유지)
 # ──────────────────────────────
-from lamgchain.chat_models import ChatOpenAI
+from langchain.chat_models import ChatOpenAI
 from langchain.schema import AIMessage, HumanMessage, SystemMessage
 import requests, os, json
 from requests.adapters import HTTPAdapter, Retry