I think I remember now.

app/Http/Controllers/UserController.php

@@ -20,9 +20,8 @@ class UserController extends Controller {
             ->select(
                      'id',
                      'username',
-                     'perm_id', // Can't remember if this was used TBH.
+                     'perm_id',
                      'member_title',
-                     'permission_id', // Same goes for this one.
                      'reg_date',
                      'website_address',
                      'website_name',