Crash Report for Server Continually Crashing on Connection

When my friend connects to the server it instantly crashes the server, but my other friend does not encounter this issue.

---- Minecraft Crash Report ----

WARNING: coremods are present:
SpongeCoremod (spongeforge-1.12.2-2825-7.1.6.jar)
Contact their authors BEFORE contacting forge

// Don’t do that.

Time: 8/10/19 9:57 PM
Description: Exception ticking world

java.lang.NoSuchFieldError: field_185198_a
at com.rwtema.extrautils2.villagers.EmeraldForPotions.getCraftLevels(EmeraldForPotions.java:70)
at com.rwtema.extrautils2.villagers.EmeraldForPotions.addMerchantRecipeBase(EmeraldForPotions.java:119)
at com.rwtema.extrautils2.compatibility.VillagerTradeCompat.func_190888_a(VillagerTradeCompat.java:20)
at org.spongepowered.mod.registry.SpongeForgeVillagerRegistry.populateOffers(SpongeForgeVillagerRegistry.java:150)
at net.minecraft.entity.passive.EntityVillager.func_175554_cu(EntityVillager.java:2256)
at net.minecraft.entity.passive.EntityVillager.func_190672_a(EntityVillager.java:862)
at net.minecraft.world.gen.structure.StructureVillagePieces$Village.func_74893_a(StructureVillagePieces.java:1793)
at net.minecraft.world.gen.structure.StructureVillagePieces$WoodHut.func_74875_a(StructureVillagePieces.java:2137)
at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)
at net.minecraft.world.gen.structure.MapGenStructure.func_175794_a(MapGenStructure.java:603)
at net.minecraft.world.gen.structure.MapGenVillage.populate(SourceFile:553)
at org.spongepowered.common.interfaces.world.gen.IFlaggedPopulator.populate(IFlaggedPopulator.java:40)
at org.spongepowered.mod.world.gen.SpongeChunkGeneratorForge.func_185931_b(SpongeChunkGeneratorForge.java:277)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1019)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:985)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
at net.minecraft.server.management.PlayerChunkMapEntry.redirect$onProvidePlayerChunk$bco000(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:227)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:756)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Unknown Source)

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

– Head –
Thread: Server thread
Stacktrace:
at com.rwtema.extrautils2.villagers.EmeraldForPotions.getCraftLevels(EmeraldForPotions.java:70)
at com.rwtema.extrautils2.villagers.EmeraldForPotions.addMerchantRecipeBase(EmeraldForPotions.java:119)
at com.rwtema.extrautils2.compatibility.VillagerTradeCompat.func_190888_a(VillagerTradeCompat.java:20)
at org.spongepowered.mod.registry.SpongeForgeVillagerRegistry.populateOffers(SpongeForgeVillagerRegistry.java:150)
at net.minecraft.entity.passive.EntityVillager.func_175554_cu(EntityVillager.java:2256)
at net.minecraft.entity.passive.EntityVillager.func_190672_a(EntityVillager.java:862)
at net.minecraft.world.gen.structure.StructureVillagePieces$Village.func_74893_a(StructureVillagePieces.java:1793)
at net.minecraft.world.gen.structure.StructureVillagePieces$WoodHut.func_74875_a(StructureVillagePieces.java:2137)
at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)
at net.minecraft.world.gen.structure.MapGenStructure.func_175794_a(MapGenStructure.java:603)
at net.minecraft.world.gen.structure.MapGenVillage.populate(SourceFile:553)
at org.spongepowered.common.interfaces.world.gen.IFlaggedPopulator.populate(IFlaggedPopulator.java:40)
at org.spongepowered.mod.world.gen.SpongeChunkGeneratorForge.func_185931_b(SpongeChunkGeneratorForge.java:277)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1019)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:985)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
at net.minecraft.server.management.PlayerChunkMapEntry.redirect$onProvidePlayerChunk$bco000(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:227)

– Affected level –
Details:
Level name: world
All players: 2 total; [EntityPlayerMP[‘THIS_GAME_IS_35’/14, l=‘world’, x=-2156.29, y=71.00, z=14.30], EntityPlayerMP[‘Armie58’/92, l=‘world’, x=3104.63, y=69.00, z=798.54]]
Chunk stats: ServerChunkCache: 1116 Drop: 0
Level seed: -3104492890089738382
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (-148,64,-44), Chunk: (at 12,4,4 in -10,-3; contains blocks -160,0,-48 to -145,255,-33), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 6086856 game time, 2224175 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 33436 (now: false), thunder time: 855 (now: true)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

– Sponge PhaseTracker –
Details:
Phase Stack: //
/
- Phase: GenerationPhase{}{TerrainGenerationState:TERRAIN_GENERATION} /
/
Context: /
/
- World: WorldServer{Name=world, DimensionId=0, DimensionType=minecraft:overworld, DimensionTypeId=0} /
/
- Phase: GenerationPhase{}{TerrainGenerationState:TERRAIN_GENERATION} /
/
Context: /
/
- World: WorldServer{Name=world, DimensionId=0, DimensionType=minecraft:overworld, DimensionTypeId=0} /
/
/

Stacktrace:
at net.minecraft.server.MinecraftServer.handler$onCrashReport$zjo000(MinecraftServer.java:3980)
at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:554)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_221, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 2706965888 bytes (2581 MB) / 3787980800 bytes (3612 MB) up to 3787980800 bytes (3612 MB)
JVM Flags: 2 total; -Xms4000M -Xmx4000M
IntCache: cache: 12, tcache: 94, allocated: 0, tallocated: 0
FML: MCP 9.42 Powered by Forge 14.23.5.2838 12 mods loaded, 12 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                                |
|:------ |:----------- |:----------------- |:--------------------------------------- |:---------------------------------------- |
| LCHIJA | minecraft   | 1.12.2            | minecraft.jar                           | None                                     |
| LCHIJA | mcp         | 9.42              | minecraft.jar                           | None                                     |
| LCHIJA | FML         | 8.0.99.99         | forge-1.12.2-14.23.5.2838-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LCHIJA | forge       | 14.23.5.2838      | forge-1.12.2-14.23.5.2838-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LCHIJA | spongeapi   | 7.1.0-fb496dbf0   | spongeforge-1.12.2-2825-7.1.6.jar       | None                                     |
| LCHIJA | sponge      | 1.12.2-7.1.6      | spongeforge-1.12.2-2825-7.1.6.jar       | None                                     |
| LCHIJA | spongeforge | 1.12.2-2825-7.1.6 | spongeforge-1.12.2-2825-7.1.6.jar       | None                                     |
| LCHIJA | extrautils2 | 1.0               | Extra-Utilities-Mod-1.12.2.jar          | None                                     |
| LCHIJA | ironchest   | 1.12.2-7.0.67.844 | Iron-Chests-Mod-1.12.2.jar              | None                                     |
| LCHIJA | luckperms   | 4.3.75            | LuckPerms-Sponge-4.3.75.jar             | None                                     |
| LCHIJA | pixelmon    | 7.0.7             | Pixelmon-1.12.2-7.0.7-server.jar        | None                                     |
| LCHIJA | pixelextras | 2.5.1             | PixelExtras-1.12.2-2.5.1-universal.jar  | None                                     |

Loaded coremods (and transformers): 

SpongeCoremod (spongeforge-1.12.2-2825-7.1.6.jar)
org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
Profiler Position: N/A (disabled)
Player Count: 2 / 20; [EntityPlayerMP[‘THIS_GAME_IS_35’/14, l=‘world’, x=-2156.29, y=71.00, z=14.30], EntityPlayerMP[‘Armie58’/92, l=‘world’, x=3104.63, y=69.00, z=798.54]]
Is Modded: Definitely; Server brand changed to ‘fml,forge,sponge’
Type: Dedicated Server (map_server.txt)

Please share entire logs following the reporting log rules outlined in Common Crash Issues [PLEASE READ FIRST]

It looks like extra utils is expecting a different version of forge or something. I would first check to make sure that the mod is updated and matching your Forge version.

If the crash still happens when sponge is removed/disabled, I would recommend reporting the error to the mod, as it is likely a mod side error at that point.