Update app.py

app.py

@@ -16,7 +16,7 @@ def chat_with_gemini(user_api_key, user_input, history):
         tuple: The updated conversation history with the chatbot's reply.
     """
     # Determine which API key to use
-    api_key = user_api_key.strip() if user_api_key else os.getenv("DEFAULT_API_KEY")
+    api_key = user_api_key.strip() if user_api_key else os.getenv("YOUR_API_KEY")
     
     if not api_key:
         # If no API key is available, prompt the user