---- Minecraft Crash Report ----
// My bad.

Time: 02/04/20 18:51
Description: Exception ticking world

java.lang.AbstractMethodError: net.minecraft.block.trees.Tree.func_225546_b_(Ljava/util/Random;)Lnet/minecraft/world/gen/feature/ConfiguredFeature;
	at net.minecraft.block.trees.Tree.func_225545_a_(SourceFile:20) ~[?:?] {re:classloading}
	at net.minecraft.block.SaplingBlock.func_226942_a_(SaplingBlock.java:44) ~[?:?] {re:classloading}
	at net.minecraft.block.SaplingBlock.func_225534_a_(SaplingBlock.java:34) ~[?:?] {re:classloading}
	at net.minecraft.block.Block.func_225542_b_(Block.java:445) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.block.BlockState.func_227034_b_(BlockState.java:253) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.world.server.ServerWorld.func_217441_a(ServerWorld.java:479) ~[?:?] {re:classloading,xf:fml:quark:change-sleeping-player-count,xf:fml:quark:add-rave-hook,pl:runtimedistcleaner:A}
	at net.minecraft.world.server.ServerChunkProvider.func_223434_a(SourceFile:406) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$1.forEach(Long2ObjectLinkedOpenHashMap.java:1661) ~[server-1.15.1-extra.jar:?] {re:classloading}
	at com.google.common.collect.Iterables$UnmodifiableIterable.forEach(Iterables.java:105) ~[server-1.15.1-extra.jar:?] {}
	at net.minecraft.world.server.ServerChunkProvider.func_217220_m(SourceFile:367) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.world.server.ServerChunkProvider.func_217207_a(SourceFile:336) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:313) ~[?:?] {re:classloading,xf:fml:quark:change-sleeping-player-count,xf:fml:quark:add-rave-hook,pl:runtimedistcleaner:A}
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:841) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:324) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:776) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:634) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_241] {}


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

-- Head --
Thread: Server thread
Stacktrace:
	at net.minecraft.block.trees.Tree.func_225545_a_(SourceFile:20)
	at net.minecraft.block.SaplingBlock.func_226942_a_(SaplingBlock.java:44)
	at net.minecraft.block.SaplingBlock.func_225534_a_(SaplingBlock.java:34)
	at net.minecraft.block.Block.func_225542_b_(Block.java:445)
	at net.minecraft.block.BlockState.func_227034_b_(BlockState.java:253)
	at net.minecraft.world.server.ServerWorld.func_217441_a(ServerWorld.java:479)
	at net.minecraft.world.server.ServerChunkProvider.func_223434_a(SourceFile:406)
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$1.forEach(Long2ObjectLinkedOpenHashMap.java:1661)
	at com.google.common.collect.Iterables$UnmodifiableIterable.forEach(Iterables.java:105)
	at net.minecraft.world.server.ServerChunkProvider.func_217220_m(SourceFile:367)
	at net.minecraft.world.server.ServerChunkProvider.func_217207_a(SourceFile:336)
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:313)

-- Affected level --
Details:
	All players: 1 total; [ServerPlayerEntity['NiTnEuQs'/357, l='world', x=-254.08, y=71.10, z=-252.80]]
	Chunk stats: ServerChunkCache: 2257
	Level dimension: DimensionType{minecraft:overworld}
	Level name: world
	Level seed: -4084622512139015404
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (-240,63,-256), Chunk: (at 0,3,0 in -15,-16; contains blocks -240,0,-256 to -225,255,-241), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Level time: 2318073 game time, 299747 day time
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 57669 (now: false), thunder time: 105672 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:841)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:324)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:776)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:634)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.15.1
	Minecraft Version ID: 1.15.1
	Operating System: Windows 10 (x86) version 10.0
	Java Version: 1.8.0_241, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 619466264 bytes (590 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
	CPUs: 6
	JVM Flags: 2 total; -Xms1024M -Xmx1024M
	ModLauncher: 5.0.0-milestone.4+67+b1a340b
	ModLauncher launch target: fmlserver
	ModLauncher naming: srg
	ModLauncher services: 
		/eventbus-2.0.0-milestone.1-service.jar eventbus PLUGINSERVICE 
		/forge-1.15.1-30.0.51.jar object_holder_definalize PLUGINSERVICE 
		/forge-1.15.1-30.0.51.jar runtime_enum_extender PLUGINSERVICE 
		/accesstransformers-2.0.0-milestone.1-shadowed.jar accesstransformer PLUGINSERVICE 
		/forge-1.15.1-30.0.51.jar capability_inject_definalize PLUGINSERVICE 
		/forge-1.15.1-30.0.51.jar runtimedistcleaner PLUGINSERVICE 
		/forge-1.15.1-30.0.51.jar fml TRANSFORMATIONSERVICE 
	FML: 30.0
	Forge: net.minecraftforge:30.0.51
	FML Language Providers: 
		[email protected]
		minecraft@1
	Mod List: 
		forge-1.15.1-30.0.51-server.jar Minecraft {[email protected] DONE}
		DungeonCrawl-1.15.2-1.6.3.jar Dungeon Crawl {[email protected] DONE}
		AmbientSounds_v3.0.16_mc1.15.2.jar Ambient Sounds {[email protected] DONE}
		forge-1.15.1-30.0.51-universal.jar Forge {[email protected] DONE}
		cfm-7.0.0-pre16-mc1.15.1.jar MrCrayfish's Furniture Mod {[email protected] DONE}
		AutoRegLib-1.5-40.jar AutoRegLib {[email protected] DONE}
		Quark-r2.1-228.jar Quark {[email protected] DONE}
	Player Count: 1 / 10; [ServerPlayerEntity['NiTnEuQs'/357, l='world', x=-254.08, y=71.10, z=-252.80]]
	Data Packs: vanilla, mod:ambientsounds (incompatible), mod:autoreglib (incompatible), mod:cfm (incompatible), mod:dungeoncrawl (incompatible), mod:forge (incompatible), mod:quark
	Is Modded: Definitely; Server brand changed to 'forge'
	Type: Dedicated Server (map_server.txt)