added secret

app.py

@@ -6,7 +6,8 @@ import os
 import io
 import json
 
-access_token = os.getenv("access_token")
+with open("secret.txt", "r") as file:
+    access_token = file.read().strip()
 
 # NOTE - we configure docs_url to serve the interactive Docs at the root path
 # of the app. This way, we can use the docs as a landing page for the app on Spaces.