Statistics Portal - invalid argument index.php

Context
-------

$_SERVER: Array
(
    [HTTP_HOST] => play.denmarkinminecraft.com
    [HTTP_CONNECTION] => keep-alive
    [HTTP_CACHE_CONTROL] => max-age=0
    [HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
    [HTTP_USER_AGENT] => Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36
    [HTTP_DNT] => 1
    [HTTP_ACCEPT_ENCODING] => gzip,deflate,sdch
    [HTTP_ACCEPT_LANGUAGE] => en-US,en;q=0.8
    [HTTP_COOKIE] => incap_ses_261_15251=+jqMez2p/zBEUzWlN0KfA7cuPFQAAAAA2JtVrOveNS/uPERdQJzopQ==; visid_incap_15251=8cLnf0hUSwuFcdn7qK5vhrYuPFQAAAAAQUIPAAAAAABjqTzYh1RnJlaBsUkEcH3U; PHPSESSID=a5nj2alpk02od006il4bpbols0; __qca=P0-144588889-1413321734977; _ga=GA1.2.999019486.1413321739; incap_ses_198_15251=uwpNZy5MbAbX0ZKyGHC/Ao8FP1QAAAAAb6/3zSOw4UNVM6XM9weVQg==; lastviewed=1413572965; incap_ses_104_15251=SPIzHo7AzR/L83Xy231xAWVpQVQAAAAAr/rOPMeCz/4KyevFkC5w6w==
    [PATH] => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
    [SERVER_SIGNATURE] => <address>Apache/2.4.7 (Ubuntu) Server at play.denmarkinminecraft.com Port 80</address>

    [SERVER_SOFTWARE] => Apache/2.4.7 (Ubuntu)
    [SERVER_NAME] => play.denmarkinminecraft.com
    [SERVER_ADDR] => 91.121.222.170
    [SERVER_PORT] => 80
    [REMOTE_ADDR] => 178.21.88.99
    [DOCUMENT_ROOT] => /var/www/html
    [REQUEST_SCHEME] => http
    [CONTEXT_PREFIX] => {empty_string}
    [CONTEXT_DOCUMENT_ROOT] => /var/www/html
    [SERVER_ADMIN] => webmaster@localhost
    [SCRIPT_FILENAME] => /var/www/html/statistics/index.php
    [REMOTE_PORT] => 51912
    [GATEWAY_INTERFACE] => CGI/1.1
    [SERVER_PROTOCOL] => HTTP/1.1
    [REQUEST_METHOD] => GET
    [QUERY_STRING] => {empty_string}
    [REQUEST_URI] => /statistics/index.php
    [SCRIPT_NAME] => /statistics/index.php
    [PHP_SELF] => /statistics/index.php
    [REQUEST_TIME_FLOAT] => 1413574116.859
    [REQUEST_TIME] => 1413574116
)

$_POST: Array
(
)

$_GET: Array
(
)

$_FILES: Array
(
)

$_SESSION: Array
(
    [fSession::type] => normal
    [fSession::expires] => 1413660516
)

$_COOKIE: Array
(
    [incap_ses_261_15251] =>  jqMez2p/zBEUzWlN0KfA7cuPFQAAAAA2JtVrOveNS/uPERdQJzopQ==
    [visid_incap_15251] => 8cLnf0hUSwuFcdn7qK5vhrYuPFQAAAAAQUIPAAAAAABjqTzYh1RnJlaBsUkEcH3U
    [PHPSESSID] => a5nj2alpk02od006il4bpbols0
    [__qca] => P0-144588889-1413321734977
    [_ga] => GA1.2.999019486.1413321739
    [incap_ses_198_15251] => uwpNZy5MbAbX0ZKyGHC/Ao8FP1QAAAAAb6/3zSOw4UNVM6XM9weVQg==
    [lastviewed] => 1413572965
    [incap_ses_104_15251] => SPIzHo7AzR/L83Xy231xAWVpQVQAAAAAr/rOPMeCz/4KyevFkC5w6w==
)

___________________________________________________________________________

Warning
-------
{doc_root}/statistics/index.php(29): Design->display('overview.php')
{doc_root}/statistics/include/classes/Design.php(257): Design->loadModule('overview.php')
{doc_root}/statistics/include/classes/Design.php(144): Module->__construct('overview.php', Array, Object(Design))
{doc_root}/statistics/include/classes/Module.php(41): include('/home/www/html/...')
{doc_root}/statistics/contents/default/overview.php(99)
Invalid argument supplied for foreach()