Update app.py

app.py

@@ -33,11 +33,11 @@ class LangGraphAgent:
     def __init__(self):
         print("LangGraphAgent initialized.")
 
-        open_key = os.environ.get("OPEN_AI_KEY")
+        openai_key = os.environ.get("OPEN_AI_KEY")
         print(f"Loaded OpenAI Key: {openai_key[:3]}...")  # Avoid printing the full key in logs
 
         # Define a simple LangGraph that uses OpenAI to answer questions
-        self.llm = ChatOpenAI(model="gpt-4.1", temperature=0, api_key=open_key)
+        self.llm = ChatOpenAI(model="gpt-4.1", temperature=0, api_key=openai_key)
         
         def answer_fn(state):
             question = state["question"]