Array Unshift due to Link-tree

[tjbalon]

Hello All,

On custom pages we removed the link-tree, and I'm not too sure how (did this long ago).

We followed this, back in 2014 to get custom pages with "header.php" and "footer.php"
http://www.simplemachines.org/community/index.php?topic=243833.0

We made a modification so our forum bored at the top of custom pages would disappear (Can't remember where). As a result we get this warning:

[error] 559#559: *5294 FastCGI sent in stderr: "PHP message: PHP Warning:  array_unshift() expects parameter 1 to be array, null given in public_html/Sources/Load.php on line 1798"

Any ideas how to patch this and/or make link-trees appear on custom pages again? Completely forgot.