A PHP Error was encountered

Severity: Notice

Message: Undefined index: id

Filename: at-admin/Course_ci_model.php

Line Number: 137

Backtrace:

File: /home/artechap/public_html/proficient-mind-video-teaching.artech-appmaker.com/application/models/at-admin/Course_ci_model.php
Line: 137
Function: _error_handler

File: /home/artechap/public_html/proficient-mind-video-teaching.artech-appmaker.com/application/controllers/Home.php
Line: 36
Function: getByCategory

File: /home/artechap/public_html/proficient-mind-video-teaching.artech-appmaker.com/index.php
Line: 321
Function: require_once