Error: Could not fetch URL - HTTPSConnectionPool(host='web.archive.org', port=443): Max retries exceeded with url: /web/20190430061032/https://www.duo.uio.no/bitstream/10852/67125/1/aa34225-18.pdf (Caused by NewConnectionError("HTTPSConnection(host='web.archive.org', port=443): Failed to establish a new connection: [Errno 111] Connection refused"))