A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_REFERER"

Filename: controllers/Profile.php

Line Number: 1064

Backtrace:

File: /var/www/html/application/controllers/Profile.php
Line: 1064
Function: _error_handler

File: /var/www/html/index.php
Line: 354
Function: require_once

A PHP Error was encountered

Severity: Deprecated Notice

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

Filename: helpers/url_helper.php

Line Number: 524

Backtrace:

File: /var/www/html/application/controllers/Profile.php
Line: 1064
Function: redirect

File: /var/www/html/index.php
Line: 354
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/system/core/Exceptions.php:291)

Filename: helpers/url_helper.php

Line Number: 554

Backtrace:

File: /var/www/html/application/controllers/Profile.php
Line: 1064
Function: redirect

File: /var/www/html/index.php
Line: 354
Function: require_once