A PHP Error was encountered

Severity: Warning

Message: Undefined variable $next_id

Filename: views/presentation.php

Line Number: 770

Backtrace:

File: /home4/shaffer4/public_html/shafferseminars/application/views/presentation.php
Line: 770
Function: _error_handler

File: /home4/shaffer4/public_html/shafferseminars/application/controllers/Home.php
Line: 123
Function: view

File: /home4/shaffer4/public_html/shafferseminars/index.php
Line: 292
Function: require_once