From 2db66ce160d3196ba61e28518479a0a679dc0274 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach@zachbr.io>
Date: Wed, 2 Oct 2019 21:24:28 -0500
Subject: [PATCH] Name the specific custom world gen plugin class that throws a
 UOE


diff --git a/src/main/java/org/bukkit/generator/ChunkGenerator.java b/src/main/java/org/bukkit/generator/ChunkGenerator.java
index dd0123338..3fe6a22e0 100644
--- a/src/main/java/org/bukkit/generator/ChunkGenerator.java
+++ b/src/main/java/org/bukkit/generator/ChunkGenerator.java
@@ -84,7 +84,10 @@ public abstract class ChunkGenerator {
      */
     @NotNull
     public ChunkData generateChunkData(@NotNull World world, @NotNull Random random, int x, int z, @NotNull BiomeGrid biome) {
-        throw new UnsupportedOperationException("Custom generator is missing required method generateChunkData");
+        // Paper start - More helpful custom chunk gen exceptions
+        final String generatorClass = world.getGenerator() != null ? world.getGenerator().getClass().getName() : "null";
+        throw new UnsupportedOperationException("Custom generator is missing required method generateChunkData: " + generatorClass);
+        // Paper end
     }
 
     /**
-- 
2.23.0