An uncaught Exception was encountered

Type: Error

Message: Call to a member function result() on bool

Filename: /home/mobilemall/public_html/application/modules/Frontend/models/Mdl_frontend.php

Line Number: 719

Backtrace:

File: /home/mobilemall/public_html/application/modules/Frontend/controllers/Frontend.php
Line: 2249
Function: get_comparisons_product_list

File: /home/mobilemall/public_html/index.php
Line: 367
Function: require_once