Deprecated error need help

[Goomzee]

Deprecated: Assigning the return value of new by reference is deprecated in /home/mknex0/public_html/forums/includes/class_core.php on line 2552



Unable to add cookies, header already sent.
File: /home/public_html/forums/includes/class_core.php
Line: 2552


Php Version 5.4.27
vbulletin 3.8.2

i find this solutions i don't understand where i put this code
https://vborg.vbsupport.ru/showthread.php?t=285695

[Mark.B]

3.8.2 is not compatible with php 5.4.

You need to do one of two things:

1. Upgrade vBulletin to 3.8.8
2. Downgrade php to 5.3.