From 616ec5f700b93f0c3a155112ae59b92e29fdefa7 Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Sat, 7 Sep 2024 18:57:55 +1000
Subject: [PATCH] SPIGOT-7891: Can't remove second ingredient of MerchantRecipe

By: md_5 <git@md-5.net>
---
 .../org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java   | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java b/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
index 9fe2855ab9..f7b28b2f23 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
@@ -120,6 +120,8 @@ public class CraftMerchantRecipe extends MerchantRecipe {
         if (ingredients.size() > 1) {
             net.minecraft.world.item.ItemStack costB = CraftItemStack.asNMSCopy(ingredients.get(1));
             handle.costB = Optional.of(new ItemCost(costB.getItemHolder(), costB.getCount(), DataComponentPredicate.allOf(costB.getComponents()), costB));
+        } else {
+            handle.costB = Optional.empty();
         }
         return handle;
     }