So it seems that the legends mod by Tihyo, is having an id conflict with 23, I need help on what the specific id is, as ive already searched through legends' config file, and I can't really find anything.
Here's the crash report

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 8/7/19 6:39 PM
Description: Exception getting block type in world

java.lang.IllegalArgumentException: Duplicate id value for 23!
at net.minecraft.entity.DataWatcher.func_75682_a(SourceFile:64)
at com.tihyo.legends.management.properties.LegendsEntityProperties.<init>(LegendsEntityProperties.java:31)
at com.tihyo.legends.management.properties.LegendsEntityProperties.register(LegendsEntityProperties.java:36)
at com.tihyo.legends.handlers.LegendsPropertiesHandler.onEntityConstruct(LegendsPropertiesHandler.java:81)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_16_LegendsPropertiesHandler_onEntityConstruct_EntityConstructing.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
at net.minecraft.entity.Entity.<init>(Entity.java:179)
at net.minecraft.entity.EntityLivingBase.<init>(EntityLivingBase.java:119)
at net.minecraft.entity.EntityLiving.<init>(EntityLiving.java:68)
at net.minecraft.entity.EntityCreature.<init>(SourceFile:23)
at JinRyuu.DragonBC.common.Npcs.EntityDBC.<init>(EntityDBC.java:43)
at JinRyuu.DragonBC.common.Npcs.EntityDBCKami.<init>(EntityDBCKami.java:32)
at JinRyuu.DragonBC.common.Npcs.EntityMasterKami.<init>(EntityMasterKami.java:20)
at JinRyuu.DragonBC.common.Worlds.WorldGeneratorDB.generateSurface(WorldGeneratorDB.java:161)
at JinRyuu.DragonBC.common.Worlds.WorldGeneratorDB.generate(WorldGeneratorDB.java:60)
at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)
at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)
at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1055)
at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)
at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)
at net.minecraft.world.World.func_72964_e(World.java:419)
at net.minecraft.world.World.func_147439_a(World.java:345)
at net.minecraft.block.BlockStaticLiquid.func_149674_a(SourceFile:39)
at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:391)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:183)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:625)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)


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

-- Head --
Stacktrace:
at net.minecraft.entity.DataWatcher.func_75682_a(SourceFile:64)
at com.tihyo.legends.management.properties.LegendsEntityProperties.<init>(LegendsEntityProperties.java:31)
at com.tihyo.legends.management.properties.LegendsEntityProperties.register(LegendsEntityProperties.java:36)
at com.tihyo.legends.handlers.LegendsPropertiesHandler.onEntityConstruct(LegendsPropertiesHandler.java:81)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_16_LegendsPropertiesHandler_onEntityConstruct_EntityConstructing.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
at net.minecraft.entity.Entity.<init>(Entity.java:179)
at net.minecraft.entity.EntityLivingBase.<init>(EntityLivingBase.java:119)
at net.minecraft.entity.EntityLiving.<init>(EntityLiving.java:68)
at net.minecraft.entity.EntityCreature.<init>(SourceFile:23)
at JinRyuu.DragonBC.common.Npcs.EntityDBC.<init>(EntityDBC.java:43)
at JinRyuu.DragonBC.common.Npcs.EntityDBCKami.<init>(EntityDBCKami.java:32)
at JinRyuu.DragonBC.common.Npcs.EntityMasterKami.<init>(EntityMasterKami.java:20)
at JinRyuu.DragonBC.common.Worlds.WorldGeneratorDB.generateSurface(WorldGeneratorDB.java:161)
at JinRyuu.DragonBC.common.Worlds.WorldGeneratorDB.generate(WorldGeneratorDB.java:60)
at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)
at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)
at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1055)
at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)
at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)
at net.minecraft.world.World.func_72964_e(World.java:419)

-- Requested block coordinates --
Details:
Found chunk: true
Location: World: (247,9,912), Chunk: (at 7,0,0 in 15,57; contains blocks 240,0,912 to 255,255,927), Region: (0,1; contains chunks 0,32 to 31,63, blocks 0,0,512 to 511,255,1023)
Stacktrace:
at net.minecraft.world.World.func_147439_a(World.java:345)
at net.minecraft.block.BlockStaticLiquid.func_149674_a(SourceFile:39)
at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:391)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:183)

-- Affected level --
Details:
Level name: Dark Goku's Beginnings
All players: 1 total; [EntityPlayerMP['SilverKairos'/144, l='Dark Goku's Beginnings', x=99.55, y=79.70, z=644.06]]
Chunk stats: ServerChunkCache: 1723 Drop: 0
Level seed: -5033135086704963443
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (-63,64,-34), Chunk: (at 1,4,14 in -4,-3; contains blocks -64,0,-48 to -49,255,-33), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 143370 game time, 57278 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 4590 (now: true), thunder time: 37635 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:625)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Mac OS X (x86_64) version 10.14.5
Java Version: 1.8.0_74, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 444876488 bytes (424 MB) / 1040187392 bytes (992 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 7 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.05 FML v7.10.141.1403 Minecraft Forge 10.13.3.1403 23 mods loaded, 23 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.141.1403} [Forge Mod Loader] (forge-1.7.10-10.13.3.1403-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.3.1403} [Minecraft Forge] (forge-1.7.10-10.13.3.1403-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{1.0.7.47} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.0.5.120} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.120-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
legends{1.3.3} [Legends Mod] (1Legends-1.7.10-1.3.3 copy.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
legendshorror{1.0} [Legends: Horror] (1Legends-1.7.10-1.3.3 copy.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
legendskaiju{1.0} [Legends: Kaiju] (1Legends-1.7.10-1.3.3 copy.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
legendsstarwars{1.0} [Legends: Star Wars] (1Legends-1.7.10-1.3.3 copy.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
sum{6.0} [Legends: Superheroes Unlimited] (1Legends-1.7.10-1.3.3 copy.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
armourersWorkshop{1.7.10-0.48.3} [Armourer's Workshop] (Armourers-Workshop-1.7.10-0.48.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
customnpcs{1.7.10d} [CustomNpcs] (CustomNPCs_1.7.10d(29oct17).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
jinryuujrmcore{1.3.21a} [JinRyuu's JRMCore] (JRMCore-v1.3.21a.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
jinryuudragonblockc{1.4.61} [Dragon Block C] (DragonBlockC-v1.4.61.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
infinitygauntlet{0.1.0b} [Infinity Gauntlet] (Infinity-Gauntlet-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
jinryuubetterrenderaddon{1.6.36} [JinRyuu's Better Render Addon] (JBRA-Client-v1.6.36.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
jinryuufamilyc{1.2.16} [JinRyuu's Family C] (JFamilyC-v1.2.16.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Mantle{1.7.10-0.3.2.jenkins191} [Mantle] (Mantle-1.7.10-0.3.2b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
OreSpawn{1.7.10.20.3} [OreSpawn] (orespawn-1.7.10-20.3 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ProjectE{1.7.10-PE1.10.0} [ProjectE] (ProjectE-1.7.10-PE1.10.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TConstruct{1.7.10-1.8.8.build991} [Tinkers' Construct] (TConstruct-1.7.10-1.8.8.build991.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
dna948{1.35} [The Last Sword You Will Ever Need Mod] (The_Last_Sword_You_Will_Ever_Need_Mod-1.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TwilightForest{2.3.7} [The Twilight Forest] (twilightforest-1.7.10-2.3.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Mantle Environment: Environment healthy.
TConstruct Environment: Environment healthy.
Armourer's Workshop:
Render Type: RENDER_EVENT
Texture Render: false
Baking Queue: 0
Request Queue: 0
Texture Painting: false
Multipass Skin Rendering: true
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['SilverKairos'/144, l='Dark Goku's Beginnings', x=99.55, y=79.70, z=644.06]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'