A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: models/Reading_list_model.php

Line Number: 72

Backtrace:

File: /home/kkdmfj999i345ns/public_html/application/models/Reading_list_model.php
Line: 72
Function: _error_handler

File: /home/kkdmfj999i345ns/public_html/application/controllers/Home_controller.php
Line: 647
Function: get_reading_list_count

File: /home/kkdmfj999i345ns/public_html/index.php
Line: 315
Function: require_once