From 688863035586edb8cd9bcf99d4ad74eb5763f449 Mon Sep 17 00:00:00 2001
From: Aria <ariahyrule@gmail.com>
Date: Wed, 18 Dec 2019 19:24:22 +0100
Subject: [PATCH] Clicking an empty anvil result slot no longer errors

---
 .../api/experience/source/RepairItemExperienceSource.java        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/net/Indyuce/mmocore/api/experience/source/RepairItemExperienceSource.java b/src/main/java/net/Indyuce/mmocore/api/experience/source/RepairItemExperienceSource.java
index 17e77615..9bb55402 100644
--- a/src/main/java/net/Indyuce/mmocore/api/experience/source/RepairItemExperienceSource.java
+++ b/src/main/java/net/Indyuce/mmocore/api/experience/source/RepairItemExperienceSource.java
@@ -60,6 +60,7 @@ public class RepairItemExperienceSource extends ExperienceSource<ItemStack> {
 							 * before getting the amount of durability repaired
 							 */
 							ItemStack old = event.getInventory().getItem(0);
+							if (old == null || old.getType() == Material.AIR) return;
 							if (old.getType().getMaxDurability() < 30 || item.getType().getMaxDurability() < 10)
 								return;