A PHP Error was encountered

Severity: Notice

Message: Undefined index: new_pdf

Filename: frontend/PastEvents.php

Line Number: 227

Backtrace:

File: /home/magnusconference/public_html/green-chemistry/application/controllers/frontend/PastEvents.php
Line: 227
Function: _error_handler

File: /home/magnusconference/public_html/green-chemistry/application/controllers/frontend/PastEvents.php
Line: 32
Function: call_user_func_array

File: /home/magnusconference/public_html/green-chemistry/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/magnusconference/public_html/green-chemistry/system/core/Exceptions.php:271)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /home/magnusconference/public_html/green-chemistry/application/controllers/frontend/PastEvents.php
Line: 227
Function: redirect

File: /home/magnusconference/public_html/green-chemistry/application/controllers/frontend/PastEvents.php
Line: 32
Function: call_user_func_array

File: /home/magnusconference/public_html/green-chemistry/index.php
Line: 316
Function: require_once