Attempting to make a 1.12.2 forge server but it crashes

[Amayapuppy]

First off I apologize if this isn't the place to post this, but Im very new to this forum and servers in general. Im attempting to make a modded forge server with mo' creatures for 1.12.2, but after a few seconds of loading in the game and looking at animals it will crash. Below is a photo and the crash report

 

---- Minecraft Crash Report ----
// Oops.

Time: 4/16/19 1:30 AM
Description: Ticking entity

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Boolean
    at drzhark.mocreatures.entity.MoCEntityTameableAquatic.getIsTamed(MoCEntityTameableAquatic.java:89)
    at drzhark.mocreatures.entity.MoCEntityTameableAquatic.func_70094_T(MoCEntityTameableAquatic.java:452)
    at net.minecraft.entity.EntityLivingBase.func_70030_z(EntityLivingBase.java:232)
    at net.minecraft.entity.EntityLiving.func_70030_z(EntityLiving.java:208)
    at drzhark.mocreatures.entity.MoCEntityAquatic.func_70030_z(MoCEntityAquatic.java:914)
    at net.minecraft.entity.Entity.func_70071_h_(Entity.java:389)
    at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2089)
    at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:295)
    at net.minecraft.world.World.func_72866_a(World.java:1993)
    at net.minecraft.world.World.func_72870_g(World.java:1955)
    at net.minecraft.world.World.func_72939_s(World.java:1759)
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1846)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1097)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Thread: Client thread
Stacktrace:
    at drzhark.mocreatures.entity.MoCEntityTameableAquatic.getIsTamed(MoCEntityTameableAquatic.java:89)
    at drzhark.mocreatures.entity.MoCEntityTameableAquatic.func_70094_T(MoCEntityTameableAquatic.java:452)
    at net.minecraft.entity.EntityLivingBase.func_70030_z(EntityLivingBase.java:232)
    at net.minecraft.entity.EntityLiving.func_70030_z(EntityLiving.java:208)
    at drzhark.mocreatures.entity.MoCEntityAquatic.func_70030_z(MoCEntityAquatic.java:914)
    at net.minecraft.entity.Entity.func_70071_h_(Entity.java:389)
    at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2089)
    at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:295)
    at net.minecraft.world.World.func_72866_a(World.java:1993)
    at net.minecraft.world.World.func_72870_g(World.java:1955)

-- Entity being ticked --
Details:
    Entity Type: mocreatures:manderin (drzhark.mocreatures.entity.aquatic.MoCEntityManderin)
    Entity ID: 1106
    Entity Name: Manderin
    Entity's Exact location: -124.50, 29.00, 123.50
    Entity's Block location: World: (-125,29,123), Chunk: (at 3,1,11 in -8,7; contains blocks -128,0,112 to -113,255,127), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
    Entity's Momentum: 0.00, 0.00, 0.00
    Entity's Passengers: []
    Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
    at net.minecraft.world.World.func_72939_s(World.java:1759)

-- Affected level --
Details:
    Level name: MpServer
    All players: 1 total; [EntityPlayerSP['AmayaThePuppyDog'/320, l='MpServer', x=-173.29, y=69.00, z=184.96]]
    Chunk stats: MultiplayerChunkCache: 420, 420
    Level seed: 0
    Level generator: ID 00 - default, ver 1. Features enabled: false
    Level generator options: 
    Level spawn location: World: (-150,64,206), Chunk: (at 10,4,14 in -10,12; contains blocks -160,0,192 to -145,255,207), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
    Level time: 60266 game time, 48270 day time
    Level dimension: 0
    Level storage version: 0x00000 - Unknown?
    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
    Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
    Forced entities: 68 total; [EntityPlayerSP['AmayaThePuppyDog'/320, l='MpServer', x=-173.29, y=69.00, z=184.96], EntitySpider['Spider'/642, l='MpServer', x=-110.50, y=26.00, z=110.50], EntitySkeleton['Skeleton'/1029, l='MpServer', x=-151.50, y=35.00, z=111.50], EntitySkeleton['Skeleton'/774, l='MpServer', x=-103.50, y=29.00, z=160.50], EntitySkeleton['Skeleton'/1031, l='MpServer', x=-156.50, y=35.00, z=112.50], EntitySheep['Sheep'/140, l='MpServer', x=-145.54, y=64.00, z=111.24], EntityCreeper['Creeper'/143, l='MpServer', x=-144.49, y=16.00, z=120.17], EntityCreeper['Creeper'/144, l='MpServer', x=-154.18, y=18.00, z=124.70], EntitySkeleton['Skeleton'/147, l='MpServer', x=-156.50, y=45.00, z=164.50], EntityItem['item.item.fish.cod.raw'/148, l='MpServer', x=-151.58, y=63.00, z=160.03], EntityItem['item.item.fish.cod.raw'/149, l='MpServer', x=-149.59, y=63.00, z=161.19], EntityItem['item.item.mocegg.86'/150, l='MpServer', x=-150.22, y=63.00, z=164.88], EntityDeer['Deer'/151, l='MpServer', x=-159.00, y=74.00, z=192.89], MoCEntityButterfly['ButterFly'/152, l='MpServer', x=-144.90, y=63.00, z=222.53], EntitySkeleton['Skeleton'/922, l='MpServer', x=-123.50, y=42.00, z=174.50], MoCEntityButterfly['ButterFly'/154, l='MpServer', x=-149.90, y=64.00, z=259.86], MoCEntityWerewolf['Werewolf'/673, l='MpServer', x=-107.50, y=24.00, z=133.50], MoCEntityFirefly['Firefly'/165, l='MpServer', x=-121.73, y=73.00, z=116.00], EntitySpider['Spider'/1061, l='MpServer', x=-252.33, y=32.00, z=152.03], EntityCreeper['Creeper'/169, l='MpServer', x=-137.80, y=63.00, z=241.45], EntitySheep['Sheep'/46, l='MpServer', x=-253.51, y=64.00, z=174.80], EntitySkeleton['Skeleton'/559, l='MpServer', x=-125.50, y=17.00, z=143.50], EntitySheep['Sheep'/49, l='MpServer', x=-249.60, y=64.00, z=181.18], MoCEntityElephant['Elephant'/817, l='MpServer', x=-173.50, y=69.00, z=188.50], EntityZombie['Zombie'/50, l='MpServer', x=-244.49, y=26.00, z=230.19], EntityZombie['Zombie'/181, l='MpServer', x=-114.51, y=27.00, z=115.78], EntityZombie['Zombie'/565, l='MpServer', x=-145.50, y=16.00, z=121.50], EntitySpider['Spider'/182, l='MpServer', x=-113.70, y=23.00, z=143.01], EntityItem['item.item.seeds'/55, l='MpServer', x=-229.77, y=63.00, z=192.21], MoCEntityMiniGolem['MiniGolem'/184, l='MpServer', x=-117.10, y=23.00, z=141.10], MoCEntityDragonfly['DragonFly'/57, l='MpServer', x=-232.43, y=64.00, z=252.50], EntityZombieVillager['Zombie Villager'/442, l='MpServer', x=-140.50, y=31.00, z=117.50], EntityItem['item.item.fish.cod.raw'/187, l='MpServer', x=-126.91, y=64.00, z=176.31], EntityZombieVillager['Zombie Villager'/443, l='MpServer', x=-139.50, y=31.00, z=117.50], EntityEnderman['Enderman'/571, l='MpServer', x=-128.46, y=21.00, z=116.52], EntityWolf['Wolf'/62, l='MpServer', x=-209.37, y=64.00, z=227.48], EntityZombie['Zombie'/192, l='MpServer', x=-116.25, y=23.00, z=140.58], EntityZombie['Zombie'/193, l='MpServer', x=-111.48, y=23.00, z=143.72], EntityZombie['Zombie'/195, l='MpServer', x=-105.20, y=23.00, z=160.47], EntitySkeleton['Skeleton'/584, l='MpServer', x=-222.64, y=26.00, z=226.75], EntityCreeper['Creeper'/75, l='MpServer', x=-194.50, y=14.00, z=205.50], EntityWolf['Wolf'/76, l='MpServer', x=-202.13, y=64.00, z=227.84], EntitySkeleton['Skeleton'/1101, l='MpServer', x=-184.85, y=20.30, z=221.22], EntityWolf['Wolf'/81, l='MpServer', x=-204.45, y=64.00, z=228.73], MoCEntityManderin['Manderin'/1106, l='MpServer', x=-124.50, y=29.00, z=123.50], EntitySquid['Squid'/1107, l='MpServer', x=-203.50, y=62.00, z=175.50], EntitySkeleton['Skeleton'/731, l='MpServer', x=-118.78, y=26.00, z=120.51], EntitySkeleton['Skeleton'/95, l='MpServer', x=-179.50, y=20.00, z=208.50], EntityWolf['Wolf'/97, l='MpServer', x=-184.48, y=63.00, z=240.35], EntityDeer['Deer'/98, l='MpServer', x=-176.09, y=69.00, z=225.99], EntityCreeper['Creeper'/362, l='MpServer', x=-137.50, y=14.00, z=119.50], MoCEntitySnail['Snail'/114, l='MpServer', x=-168.13, y=64.00, z=157.98], MoCEntitySnail['Snail'/115, l='MpServer', x=-171.59, y=65.00, z=161.62], EntityDeer['Deer'/116, l='MpServer', x=-180.09, y=68.00, z=203.88], EntityDeer['Deer'/117, l='MpServer', x=-179.86, y=67.00, z=206.44], EntityItem['item.item.turkey_leg_raw'/118, l='MpServer', x=-169.81, y=70.00, z=207.52], EntityItem['item.item.venison_raw'/119, l='MpServer', x=-166.35, y=71.00, z=210.79], EntityDeer['Deer'/120, l='MpServer', x=-159.74, y=68.00, z=217.14], EntityZombie['Zombie'/760, l='MpServer', x=-187.50, y=15.00, z=208.50], EntityDeer['Deer'/121, l='MpServer', x=-160.75, y=68.00, z=217.03], EntityDeer['Deer'/122, l='MpServer', x=-161.30, y=69.00, z=215.91], EntityDeer['Deer'/123, l='MpServer', x=-159.14, y=68.00, z=218.07], EntityDeer['Deer'/124, l='MpServer', x=-160.75, y=68.00, z=217.68], EntityDeer['Deer'/125, l='MpServer', x=-160.22, y=68.00, z=216.24], EntitySkeleton['Skeleton'/1021, l='MpServer', x=-131.50, y=47.00, z=162.50], EntityDeer['Deer'/126, l='MpServer', x=-158.81, y=68.00, z=217.48], EntitySkeleton['Skeleton'/1022, l='MpServer', x=-126.50, y=47.00, z=159.50], EntityItem['item.item.seeds'/127, l='MpServer', x=-173.46, y=63.00, z=233.13]]
    Retry entities: 0 total; []
    Server brand: fml,forge
    Server type: Non-integrated multiplayer server
Stacktrace:
    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:420)
    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2740)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:418)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_51, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 401986800 bytes (383 MB) / 671088640 bytes (640 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
    FML: MCP 9.42 Powered by Forge 14.23.5.2768 6 mods loaded, 6 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State  | ID            | Version      | Source                          | Signature                                |
    |:------ |:------------- |:------------ |:------------------------------- |:---------------------------------------- |
    | UCHIJA | minecraft     | 1.12.2       | minecraft.jar                   | None                                     |
    | UCHIJA | mcp           | 9.42         | minecraft.jar                   | None                                     |
    | UCHIJA | FML           | 8.0.99.99    | forge-1.12.2-14.23.5.2768.jar   | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJA | forge         | 14.23.5.2768 | forge-1.12.2-14.23.5.2768.jar   | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJA | familiarfauna | 1.0.11       | FamiliarFauna-1.12.2-1.0.11.jar | None                                     |
    | UCHIJA | mocreatures   | 12.0.5       | Mo-Creatures-Mod-1.12.2.jar     | None                                     |

    Loaded coremods (and transformers): 
    GL info: ' Vendor: 'Intel' Version: '4.5.0 - Build 23.20.16.5018' Renderer: 'Intel(R) UHD Graphics 630'
    Launched Version: 1.12.2-forge1.12.2-14.23.5.2768
    LWJGL: 2.9.4
    OpenGL: Intel(R) UHD Graphics 630 GL version 4.5.0 - Build 23.20.16.5018, Intel
    GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: 
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 8x Intel(R) Core(TM) i5-8300H CPU @ 2.30GHz

[DavidM]

On 4/16/2019 at 4:40 PM, Amayapuppy said:

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Boolean
    at drzhark.mocreatures.entity.MoCEntityTameableAquatic.getIsTamed(MoCEntityTameableAquatic.java:89)

There is something wrong with Mo' Creature.

Try updating to the latest version of the mod; if the same crash happens, remove the mod and report to its author.

Edited April 18, 2019 by DavidM

[Cadiboo]

IIRC the mod has broken DataManager syncing which is the cause of this and breaks other mods too.