% nocomment sites-enabled/000-default.conf
 <VirtualHost *:80>
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
        Include conf-available/serve-cgi-bin.conf
</VirtualHost>
# uncomment line tu ^

% nocomment conf-enabled/serve-cgi-bin.conf
<IfModule mod_alias.c>
        <IfModule mod_cgi.c>
                Define ENABLE_USR_LIB_CGI_BIN
        </IfModule>
        <IfModule mod_cgid.c>
                Define ENABLE_USR_LIB_CGI_BIN
        </IfModule>
        <IfModule mod_fastcgi.c>
                Define ENABLE_USR_LIB_CGI_BIN
        </IfModule>
        <IfDefine ENABLE_USR_LIB_CGI_BIN>
                ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
                <Directory "/usr/lib/cgi-bin">
                        AllowOverride None
                        Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
                        Require all granted
                </Directory>
        </IfDefine>
</IfModule>
# add lines tu