A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_ACCEPT_LANGUAGE

Filename: helpers/util_helper.php

Line Number: 681

Backtrace:

File: /homepages/17/d390214979/htdocs/html5/usonnetsu/app/helpers/util_helper.php
Line: 681
Function: _error_handler

File: /homepages/17/d390214979/htdocs/html5/usonnetsu/app/core/MY_Controller.php
Line: 118
Function: isBrowserLanguageKorean

File: /homepages/17/d390214979/htdocs/html5/usonnetsu/app/controllers/Social.php
Line: 10
Function: __construct

File: /homepages/17/d390214979/htdocs/html5/usonnetsu/index.php
Line: 328
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /homepages/17/d390214979/htdocs/html5/codeigniter3/core/Exceptions.php:283)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /homepages/17/d390214979/htdocs/html5/usonnetsu/app/controllers/Social.php
Line: 65
Function: redirect

File: /homepages/17/d390214979/htdocs/html5/usonnetsu/index.php
Line: 328
Function: require_once