Setting up libapache2-mod-parser3 (3.4.1-3ubuntu1) ... apache2: Syntax error on line 154 of /etc/apache2/apache2.conf: Cannot load /etc/apache2/modules/mod_authz_host.so into server: /etc/apache2/modules/mod_authz_host.so: cannot open shared object file: No such file or directory Action 'configtest' failed. The Apache error log may have more information. ...fail! invoke-rc.d: initscript apache2, action "restart" failed. dpkg: error processing libapache2-mod-parser3 (--configure): subprocess installed post-installation script returned error exit status 1