A PHP Error was encountered

Severity: Warning

Message: Undefined array key "target_key"

Filename: core/MY_Controller.php

Line Number: 110

Backtrace:

File: /home/test-engeiuser/script/sc_plant_ai/application/core/MY_Controller.php
Line: 110
Function: _error_handler

File: /home/test-engeiuser/script/sc_plant_ai/application/controllers/Index.php
Line: 23
Function: __construct

File: /home/test-engeiuser/script/sc_plant_ai/public/index.php
Line: 321
Function: require_once