404. That’s an error.
The requested URL /add?feedurl=https://www.historichotels.org/rss/packages/omni-severin-hotel-indianapolis/hotel-deals-list was not found on this server. That’s all we know.
/add?feedurl=https://www.historichotels.org/rss/packages/omni-severin-hotel-indianapolis/hotel-deals-list