My domain is: pioneerdatahub.co.uk
I ran this command: installing lets encrypt cert on domain
It produced this output: An issue occurred while securing the domain pioneerdatahub.co.uk:
Could not issue a Let's Encrypt SSL/TLS certificate for pioneerdatahub.co.uk. Authorization for the domain failed.
Invalid response from https://acme-v02.api.letsencrypt.org/acme/authz-v3/8578172229.
Detail: DNS problem: SERVFAIL looking up A for pioneerdatahub.co.uk - the domain's nameservers may be malfunctioning
My web server is (include version): Plesk Onyx 17.8.11 Update #92
The operating system my web server runs on is (include version): Ubuntu 16.04.7 LTS
My hosting provider, if applicable, is: 1&1 (fasthosts)
I can login to a root shell on my machine (yes or no, or I don't know): yes
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): Plesk Onyx 17.8.11 Update #92
Thanks in advance.