opencart website code fixing

Closed - This job posting has been filled and work has been completed.

Job Description

my website had a probelm with one o the new plugin installed on my site . it showed error message. I tried restoring the backup files and theres a new error message now

Fatal error: Call to a member function isLogged() on a non-object in /home/djerky/public_html/catalog/model/catalog/product.php on line 450

this should be a very quick easy fix as i came across the probelm several times

the admin panel is working but the store page isnt working at all.

also have problem with the vqmod (modules) e.g. i had vqmod plugins on admin panel such as new dashboard auto fill etc. but they are not appearing . . might be becasue of the current error but not sure however thats needs to fixed aswell