From eecb4c0dc069b91ea5be52ca8fa831ecde666c19 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Thu, 8 Dec 2022 18:02:21 +1100
Subject: [PATCH] SPIGOT-7196: Exception loading alternate worlds

---
 src/main/java/org/bukkit/craftbukkit/CraftServer.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 20cdae8de..b66f41acf 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1085,7 +1085,7 @@ public final class CraftServer implements Server {
 
         long j = BiomeManager.obfuscateSeed(creator.seed());
         List<MobSpawner> list = ImmutableList.of(new MobSpawnerPhantom(), new MobSpawnerPatrol(), new MobSpawnerCat(), new VillageSiege(), new MobSpawnerTrader(worlddata));
-        WorldDimension worlddimension = (WorldDimension) iregistry.get(actualDimension);
+        WorldDimension worlddimension = this.getServer().registries().compositeAccess().registryOrThrow(Registries.LEVEL_STEM).get(actualDimension);
 
         WorldInfo worldInfo = new CraftWorldInfo(worlddata, worldSession, creator.environment(), worlddimension.type().value());
         if (biomeProvider == null && generator != null) {