A PHP Error was encountered

Severity: Notice

Message: Undefined index: id

Filename: models/Cardmodel.php

Line Number: 641

Backtrace:

File: /var/www/html/application/models/Cardmodel.php
Line: 641
Function: _error_handler

File: /var/www/html/application/controllers/Carddetails.php
Line: 719
Function: deleteCell

File: /var/www/html/index.php
Line: 322
Function: require_once