Update app.py

app.py

@@ -52,7 +52,7 @@ creds_dict = {
     "auth_provider_x509_cert_url": os.getenv("auth_provider_x509_cert_url"),
     "client_x509_cert_url": os.getenv("client_x509_cert_url")
 }
-creds_dict['private_key'] = sa_creds['private_key'].replace('\\n', '\n')
+creds_dict['private_key'] = creds_dict['private_key'].replace('\\n', '\n')
 creds = ServiceAccountCredentials.from_json_keyfile_dict(creds_dict, scope)
 client = gspread.authorize(creds)
 sheet = client.open("RAG").sheet1