A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_REFERER"

Filename: controllers/MultiLanguageSwitcher.php

Line Number: 16

Backtrace:

File: D:\Webserver\historie.bevico.nl\wwwroot\application\controllers\MultiLanguageSwitcher.php
Line: 16
Function: _error_handler

File: D:\Webserver\historie.bevico.nl\wwwroot\index.php
Line: 317
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated

Filename: helpers/url_helper.php

Line Number: 534

Backtrace:

File: D:\Webserver\historie.bevico.nl\wwwroot\application\controllers\MultiLanguageSwitcher.php
Line: 16
Function: redirect

File: D:\Webserver\historie.bevico.nl\wwwroot\index.php
Line: 317
Function: require_once