Update app.py

app.py

@@ -4,7 +4,7 @@ import os
 from tenacity import retry, wait_fixed, stop_after_attempt
 
 # Set the OpenAI API key
-openai.api_key = os.getenv("OPENAI_API_KEY")
+openai.api_key = os.getenv("YOUR_OPENAI_API_KEY")
 
 # Define the initial system message
 initial_messages = [