Yes, it looks like something broken with letsencrypt. I wasn’t able to check version etc. BUT I resolved the problem basing on the informations from Upgrading older letsencrypt to certbot. I just do:
$ sudo apt-get update
$ sudo apt-get install software-properties-common
$ sudo add-apt-repository ppa:certbot/certbot
$ sudo apt-get update
$ sudo apt-get install python-certbot-apache
Letsencrypt client wasn’t removed but updated and in /usr/bin was created certbot file and symlink letsencrypt --> certbot (earlier was just letsencrypt as file). Now, when I do “certbot --version”, I have nice output: certbot 0.26.1.
And the most important thing - ISP is not broken after this update. I still can issue LE certs using this panel, each cert already issued is in this same place /etc/letsencrypt.
PS
@rg305 you have right that there is difference but in other thread I saw somebody get advice to use “apt-get install python-letsencrypt-apache” to check version of letsencrypt client. In my case output was like in my first post.