From 5fa009e777bee101dfa6747778ae7ed54e983981 Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Sat, 5 Aug 2023 10:12:20 +1000
Subject: [PATCH] SPIGOT-7446: BlockState#update not updating a spawner's type
 to null

By: md_5 <git@md-5.net>
---
 .../java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java b/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java
index 09e31acc1a..885195fbdd 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java
@@ -32,7 +32,7 @@ public class CraftCreatureSpawner extends CraftBlockEntityState<TileEntityMobSpa
     public void setSpawnedType(EntityType entityType) {
         if (entityType == null) {
             this.getSnapshot().getSpawner().spawnPotentials = SimpleWeightedRandomList.empty(); // need clear the spawnPotentials to avoid nextSpawnData being replaced later
-            this.getSnapshot().getSpawner().nextSpawnData = null;
+            this.getSnapshot().getSpawner().nextSpawnData = new MobSpawnerData();
             return;
         }
         Preconditions.checkArgument(entityType != EntityType.UNKNOWN, "Can't spawn EntityType %s from mob spawners!", entityType);