Trying to checkout using loan policy with item limit produces nullpointer exception error on item limit validator

In bugfest goldenrod -
Trying to checkout using loan policy with item limit produces nullpointer exception error on item limit validator

In goldenrod
1. Choose patron in any patron group ex. in bugfest Test, Recaller
2. Choose item with loan type game ex. in bugfest barcodes 60710241
110510325
111936891
3. Checkout

Expected: items checked out until limit of 3 reached.
Observed: nullpointer exception with first checkout