Be aware: At times, if you copy the certificate and crucial with the Cloudflare dashboard and paste it to the pertinent data files within the server, blank lines are inserted. Nginx will address such certificates and keys as invalid, so guarantee there are no blank lines in your documents. https://awslinuxsupport01009.blogdun.com/27038310/new-step-by-step-map-for-mautic-installation