From b6c4e73481f237c7198565f7644b79837fc0e88e Mon Sep 17 00:00:00 2001
From: Frank Bauer <developer@ambertation.de>
Date: Tue, 29 Jun 2021 22:02:30 +0200
Subject: [PATCH] Fixed crash for anvil items on REI

---
 .../ru/betterend/integration/rei/REIAnvilCategory.java     | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/ru/betterend/integration/rei/REIAnvilCategory.java b/src/main/java/ru/betterend/integration/rei/REIAnvilCategory.java
index 7875148f..92456f5a 100644
--- a/src/main/java/ru/betterend/integration/rei/REIAnvilCategory.java
+++ b/src/main/java/ru/betterend/integration/rei/REIAnvilCategory.java
@@ -16,6 +16,7 @@ import net.minecraft.client.gui.GuiComponent;
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.chat.TranslatableComponent;
 import net.minecraft.world.item.BlockItem;
+import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.Items;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.Blocks;
@@ -61,7 +62,11 @@ public class REIAnvilCategory implements TransferDisplayCategory<REIAnvilDisplay
 		EntryIngredient materials = inputEntries.get(1);
 		int anvilLevel = display.getAnvilLevel();
 		List anvils = Arrays.stream(ANVILS).filter(anvil -> {
-			Block block = ((BlockItem) anvil.getValue()).getBlock();
+			Object value = anvil.getValue();
+			if (value instanceof ItemStack){
+				value = ((ItemStack) value).getItem();
+			}
+			Block block = ((BlockItem) value).getBlock();
 			if (block instanceof EndAnvilBlock) {
 				return ((EndAnvilBlock) block).getCraftingLevel() >= anvilLevel;
 			}