Hi.
A lot of my users frequently report having this error:
Unable to add cookies, header already sent.
File: /usr/local/psa/home/vhosts/egamingsupply.com/httpdocs/forum/includes/class_core.php
Line: 3036
Some of them always get this and cannot post or create new threads.
How can I fix? Not everyone gets this error...I'm an admin and never got the error myself.
A lot of my users do though.

Please assist.