// Why is it breaking :(

Time: 12/23/17 1:00 AM
Description: Exception ticking world

java.lang.NoSuchFieldError: isInGui
	at net.tropicraft.core.common.entity.underdasea.atlantoku.EntityTropicraftWaterBase.<init>(EntityTropicraftWaterBase.java:41)
	at net.tropicraft.core.common.entity.underdasea.atlantoku.EntityShark.<init>(EntityShark.java:28)
	at net.tropicraft.core.common.worldgen.mapgen.MapGenUndergroundWaterCove.decorate(MapGenUndergroundWaterCove.java:151)
	at net.tropicraft.core.common.dimension.ChunkProviderTropicraft.func_185931_b(ChunkProviderTropicraft.java:88)
	at org.spongepowered.mod.world.gen.SpongeChunkGeneratorForge.func_185931_b(SpongeChunkGeneratorForge.java:254)
	at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1000)
	at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:983)
	at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:154)
	at net.minecraft.server.management.PlayerChunkMapEntry.redirect$onProvidePlayerChunk$zpb000(PlayerChunkMapEntry.java:1079)
	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:222)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:698)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
	at java.lang.Thread.run(Thread.java:748)


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

-- Head --
Thread: Server thread
Stacktrace:
	at net.tropicraft.core.common.entity.underdasea.atlantoku.EntityTropicraftWaterBase.<init>(EntityTropicraftWaterBase.java:41)
	at net.tropicraft.core.common.entity.underdasea.atlantoku.EntityShark.<init>(EntityShark.java:28)
	at net.tropicraft.core.common.worldgen.mapgen.MapGenUndergroundWaterCove.decorate(MapGenUndergroundWaterCove.java:151)
	at net.tropicraft.core.common.dimension.ChunkProviderTropicraft.func_185931_b(ChunkProviderTropicraft.java:88)
	at org.spongepowered.mod.world.gen.SpongeChunkGeneratorForge.func_185931_b(SpongeChunkGeneratorForge.java:254)
	at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1000)
	at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:983)
	at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:154)
	at net.minecraft.server.management.PlayerChunkMapEntry.redirect$onProvidePlayerChunk$zpb000(PlayerChunkMapEntry.java:1079)
	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:222)

-- Affected level --
Details:
	Level name: TROPICS
	All players: 1 total; [EntityPlayerMP['ScratchMan'/132787, l='TROPICS', x=-1261.77, y=71.00, z=2376.87]]
	Chunk stats: ServerChunkCache: 381 Drop: 0
	Level seed: -687611310761371713
	Level generator: ID 13 - OTG, ver 0. Features enabled: true
	Level generator options:
	Level spawn location: World: (216,64,248), Chunk: (at 8,4,8 in 13,15; contains blocks 208,0,240 to 223,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 15400126 game time, 15407488 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 2709 (now: false), thunder time: 62316 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

-- Sponge CauseTracker --
Details:
	Cause Stack: /*****************************************************************/
/*   - Phase: GeneralGenerationPhaseState{id=TERRAIN_GENERATION} */
/*     Context:                                                  */
/*     - Name: World                                             */
/*       Object: WorldServer{LevelName=TROPICS, DimensionId=-127, DimensionType=tropicraft:tropics} */
/*     - Name: CapturedBlocks                                    */
/*       Object: CapturedBlocksSupplier{Captured=0}              */
/*     - Name: CapturedEntities                                  */
/*       Object: CapturedEntitiesSupplier{Captured=0}            */
/*   - Phase: GeneralGenerationPhaseState{id=TERRAIN_GENERATION} */
/*     Context:                                                  */
/*     - Name: CapturedBlocks                                    */
/*       Object: CapturedBlocksSupplier{Captured=0}              */
/*     - Name: CapturedEntities                                  */
/*       Object: CapturedEntitiesSupplier{Captured=0}            */
/*     - Name: World                                             */
/*       Object: WorldServer{LevelName=TROPICS, DimensionId=-127, DimensionType=tropicraft:tropics} */
/*****************************************************************/

Stacktrace:
	at net.minecraft.server.MinecraftServer.handler$onCrashReport$zhp000(MinecraftServer.java:3953)
	at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:829)
	at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:361)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:499)
	at java.lang.Thread.run(Thread.java:748