From 1a03ed92f3f1fe081ad545d32d6b818c6b77412f Mon Sep 17 00:00:00 2001
From: Henry Lin <henry.ys.lin@gmail.com>
Date: Sun, 8 Sep 2024 12:43:01 +0800
Subject: [PATCH] Prevent crash when ID of block entity is not found, fixes
 #149

---
 .../copycats/foundation/copycat/MigrationManager.java            | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common/src/main/java/com/copycatsplus/copycats/foundation/copycat/MigrationManager.java b/common/src/main/java/com/copycatsplus/copycats/foundation/copycat/MigrationManager.java
index a248fa16..a15a6896 100644
--- a/common/src/main/java/com/copycatsplus/copycats/foundation/copycat/MigrationManager.java
+++ b/common/src/main/java/com/copycatsplus/copycats/foundation/copycat/MigrationManager.java
@@ -85,6 +85,7 @@ public static BlockEntity migrateBlockEntity(LevelChunk chunk, BlockEntity block
 
     private static boolean isCopycatAndNeedingConversion(BlockState state, BlockEntity blockEntity) {
         ResourceLocation id = BuiltInRegistries.BLOCK_ENTITY_TYPE.getKey(blockEntity.getType());
+        if (id == null) return false;
         ResourceKey<Block> resourceKey = state.getBlock().builtInRegistryHolder().key();
         if (id.toString().equalsIgnoreCase("create:copycat")) {
             if (resourceKey.location().getNamespace().equalsIgnoreCase(Copycats.MODID)) {