Update app.py

app.py

@@ -15,7 +15,7 @@ _ = load_dotenv()
 
 # Define the LLM model
 llm_model = "gpt-3.5-turbo"
-llm = ChatOpenAI(temperature=0, model=llm_model, openai_api_key=os.getenv('OPENAI_API_KEY'))  # Ensure to pass the API key
+llm = ChatOpenAI(temperature=0, model=llm_model, openai_api_key=os.getenv('OPEN_API_KEY'))  # Ensure to pass the API key
 
 # Load tools
 tools = load_tools(["llm-math", "wikipedia"], llm=llm)