[Celena Luna]

it is like giving a pistol bullet to a sniper rifle.
the plugin is build for ZP and not Basebuilder.
Some Extra Item does not check in-deep to "Is player is Zombie/Survivor/Nemesis" so you can add it to other gamemode without much issue but most of them don't so you can't add it dirrectly like that.

Anyway, for simple fix, find all zp_get_user_survivor and remove them. It should fix the error.
But then you need to add the "shop" part from basebuilder as well