Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via GitHub by nekoexmachina
, 1 year ago
Biome [Magical Forest] threw an error while populating chunk.
via GitHub by Dirion26
, 1 year ago
Biome [Ocean] threw an error while populating chunk.
java.lang.RuntimeException: Already decorating!!	at net.minecraft.world.biome.BiomeDecorator.func_150512_a(BiomeDecorator.java:97)	at net.minecraft.world.biome.BiomeGenBase.func_76728_a(BiomeGenBase.java:339)	at thaumcraft.common.lib.world.biomes.BiomeGenMagicalForest.func_76728_a(BiomeGenMagicalForest.java:152)	at com.xcompwiz.mystcraft.world.ChunkProviderMyst.func_73153_a(ChunkProviderMyst.java:163)	at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:279)	at Reika.DragonAPI.Libraries.World.ReikaWorldHelper.forceGenAndPopulate(ReikaWorldHelper.java:1892)	at Reika.RotaryCraft.TileEntities.Production.TileEntityBorer.updateEntity(TileEntityBorer.java:257)	at Reika.DragonAPI.Base.TileEntityBase.func_145845_h(TileEntityBase.java:465)	at net.minecraft.world.World.func_72939_s(World.java:1939)	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636)	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)	at fastcraft.at.a(F:978)	at fastcraft.H.aq(F:36)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:396)	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)