A PHP Error was encountered

Severity: Notice

Message: Undefined index: url

Filename: controllers/Currency.php

Line Number: 21

Backtrace:

File: /home/alcazar/public_html/application/controllers/Currency.php
Line: 21
Function: _error_handler

File: /home/alcazar/public_html/index.php
Line: 292
Function: require_once

A PHP Error was encountered

Severity: Warning

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

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /home/alcazar/public_html/application/controllers/Currency.php
Line: 23
Function: redirect

File: /home/alcazar/public_html/index.php
Line: 292
Function: require_once