Installation Errors

Setting up apache2 (2.4.6-2~precise+1) ...
Enabling module mpm_event.
Enabling module authz_core.
Enabling module authz_host.
Enabling module authn_core.
Enabling module auth_basic.
Enabling module access_compat.
Enabling module authn_file.
Enabling module authz_user.
Enabling module alias.
Enabling module dir.
Enabling module autoindex.
Enabling module env.
Enabling module mime.
Enabling module negotiation.
Enabling module setenvif.
Enabling module filter.
Enabling module deflate.
Enabling module status.
Enabling conf charset.
Enabling conf localized-error-pages.
Enabling conf other-vhosts-access-log.
Enabling conf security.
Enabling conf serve-cgi-bin.
Enabling site 000-default.
 * Starting web server apache2                                                                                                                                                                                                                *
Selecting previously unselected package libapache2-mod-php5.
(Reading database ... 49810 files and directories currently installed.)
Unpacking libapache2-mod-php5 (from .../libapache2-mod-php5_5.5.1+dfsg-1~precise                                                                                                                                                             +1_amd64.deb) ...
Selecting previously unselected package airtime.
Unpacking airtime (from .../airtime_2.4.0-1_all.deb) ...
Processing triggers for man-db ...
Setting up libapache2-mod-php5 (5.5.1+dfsg-1~precise+1) ...

Creating config file /etc/php5/apache2/php.ini with new version
php5_invoke: Enable module apcu for apache2 SAPI
php5_invoke: Enable module tidy for apache2 SAPI
php5_invoke: Enable module mcrypt for apache2 SAPI
php5_invoke: Enable module xmlrpc for apache2 SAPI
php5_invoke: Enable module pdo_mysql for apache2 SAPI
php5_invoke: Enable module curl for apache2 SAPI
php5_invoke: Enable module pdo for apache2 SAPI
php5_invoke: Enable module mysql for apache2 SAPI
php5_invoke: Enable module pdo_pgsql for apache2 SAPI
php5_invoke: Enable module json for apache2 SAPI
php5_invoke: Enable module gd for apache2 SAPI
php5_invoke: Enable module opcache for apache2 SAPI
php5_invoke: Enable module pgsql for apache2 SAPI
php5_invoke: Enable module mysqli for apache2 SAPI
Module mpm_event disabled.
Enabling module mpm_prefork.
apache2_switch_mpm Switch to prefork
 * Restarting web server apache2                                         [ OK ]
apache2_invoke: Enable module php5
 * Restarting web server apache2                                         [ OK ]
Setting up airtime (2.4.0-1) ...
Setting up apache2...
ERROR: Site airtime-vhost does not exist!
dpkg: error processing airtime (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 airtime
E: Sub-process /usr/bin/dpkg returned an error code (1)