When I'm running the following command I got a error:
$ sudo apt-get update php7.1
The following packages have unmet dependencies:
php7.1 : Depends: libapache2-mod-php7.1 but it is not going to be installed or
php7.1-fpm but it is not going to be installed or
php7.1-cgi but it is not going to be installed
Depends: php7.1-common but it is not going to be installed
good luck
– XiR_ Dec 18 '17 at 13:14