fix selector undefined

lacagette_addons/pos_meal_voucher/static/src/js/screens.js

@@ -82,7 +82,11 @@ odoo.define("pos_meal_voucher.screens", function (require) {
             var order = this.pos.get_order();
 
             if (!this.meal_voucher_activated()) {
-              this.el.querySelector(".summary .meal-voucher").style.display = 'none';
+              const meal_voucher_summary = this.el.querySelector(".summary .meal-voucher");
+              if (meal_voucher_summary != null) {
+                meal_voucher_summary.style.display = 'none';
+              }
+              // this.el.querySelector(".summary .meal-voucher").style.display = 'none';
               return;
             }
             if (!order.get_orderlines().length) {
@@ -321,8 +325,6 @@ odoo.define("pos_meal_voucher.screens", function (require) {
                 return;
             }
 
-            var meal_voucher_available = this.meal_voucher_activated();
-
             // Update meal voucher summary
             var total_eligible = order.get_total_meal_voucher_eligible();
             this.el.querySelector("#meal-voucher-eligible-amount").textContent = this.format_currency(total_eligible);