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/integrations/apps/assignments/tasks/faqs/basics/mind-mapping/administration/classroom-exercises/tasks/images/topic_color_new.png