A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_REFERER"

Filename: controllers/LanguageSwitcher.php

Line Number: 11

Backtrace:

File: /code/application/controllers/LanguageSwitcher.php
Line: 11
Function: _error_handler

File: /code/application/core/Default_Exceptions.php
Line: 62
Function: switchLang

File: /code/index.php
Line: 419
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: 535

Backtrace:

File: /code/application/controllers/LanguageSwitcher.php
Line: 11
Function: redirect

File: /code/application/core/Default_Exceptions.php
Line: 62
Function: switchLang

File: /code/index.php
Line: 419
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /code/system/core/Exceptions.php:272)

Filename: helpers/url_helper.php

Line Number: 565

Backtrace:

File: /code/application/controllers/LanguageSwitcher.php
Line: 11
Function: redirect

File: /code/application/core/Default_Exceptions.php
Line: 62
Function: switchLang

File: /code/index.php
Line: 419
Function: require_once