No names were found in your configuration files. Please enter your domain name(s)?

Question

Digital certificates

First time installing ssl on ubuntu server. Apache. did everything according to the video https://www.youtube.com/watch?v=oRBCLBA1GrA and, as it were, everything is elementary at first glance. But I faced such problem. I can't see domains.
I tried to register manually and got an error, like that the domain is not valid. Has anyone come across this problem and knows how to solve it?

Answer 1

Most likely he wrote some Russian letter