cURL error 7: Failed to connect to www.mindomo.com port 443 after 12 ms: Connection refused (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://www.mindomo.com/help/desktop/faqs/tasks/assignments/ai/basics/integrations/css/template-mind-map/mind-mapping/classroom-exercises/concept-mapping