cURL error 7: Failed to connect to www.mindomo.com port 443 after 13 ms: Connection refused (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://www.mindomo.com/help/ahd4/mobile/subscriptions/assignments/basics/classroom-exercises/css/integrations/backup/tasks/desktop/images/boundary3.gif