 Salam, saya try guna command sudo certbot --apache -d sub.domain.com...dapat error "Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA." ..ade yg sesape prnh solve kan ?
 ubuntu 16.04
 @aman_asmuei, ok dh ok https://certbot.eff.org/all-instructions/#ubuntu-16-04-xenial-apache