java.lang.NullPointerException: Exception ticking world
at net.minecraftforge.common.BiomeDictionary.getBiomeInfo(BiomeDictionary.java:372)
at net.minecraftforge.common.BiomeDictionary.hasAnyType(BiomeDictionary.java:254)
at net.minecraftforge.common.BiomeDictionary.ensureHasTypes(BiomeDictionary.java:380)
at net.minecraftforge.common.BiomeDictionary.getTypes(BiomeDictionary.java:217)
at jaredbgreat.dldungeons.GenerationHandler.generate(GenerationHandler.java:81)
at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:167)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1018)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:997)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:227)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:754)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524)
at java.lang.Thread.run(Thread.java:745)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Server thread
Stacktrace:
at net.minecraftforge.common.BiomeDictionary.getBiomeInfo(BiomeDictionary.java:372)
at net.minecraftforge.common.BiomeDictionary.hasAnyType(BiomeDictionary.java:254)
at net.minecraftforge.common.BiomeDictionary.ensureHasTypes(BiomeDictionary.java:380)
at net.minecraftforge.common.BiomeDictionary.getTypes(BiomeDictionary.java:217)
at jaredbgreat.dldungeons.GenerationHandler.generate(GenerationHandler.java:81)
at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:167)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1018)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:997)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:227)