Update app.py

app.py

@@ -2262,7 +2262,7 @@ def serve_html_vk(filename):
         # Получаем базовую часть URL (до знака вопроса)
         base_url = urlparse(in_url).scheme + '://' + urlparse(in_url).netloc + urlparse(in_url).path  
 
-        vk_access_token_settings = request.args.get('vk_access_token_settings')
+        vk_access_token_settings = request.args.get('vk_access_token_settings', '')
         vk_app_id = request.args.get('vk_app_id')
         vk_are_notifications_enabled = request.args.get('vk_are_notifications_enabled')
         vk_is_app_user = request.args.get('vk_is_app_user')