SSL Problem - Relay access denied

Linux noob here.
I ran all the steps described in https://cyberpanel.net/docs/how-to-fix-ssl-issues-in-cyberpanel/ until forst comand line, where I receive:
Please specify at least one validation method: ‘–webroot’, ‘–standalone’, ‘–apache’, ‘–nginx’ or ‘–dns’ etc.
Help would be appreciated. Thanks.