Information

Minecraft version: 1.16.5
Modloader: Forge
Forge version: 36.2.9
Environment: Singleplayer / Multiplayer

Mod name: Just Mob Heads
Mod version: justmobheads_1.16.5-5.1

Description

The game crash when breaking a head. Removing the mod solved the issue.

Crash report

`[21Nov2021 01:28:38.487] [Server thread/ERROR] [net.minecraftforge.eventbus.EventBus/EVENTBUS]: Exception caught during firing event: 'com.mojang.authlib.GameProfile net.minecraft.tileentity.SkullTileEntity.func_152108_a()'
Index: 18
Listeners:
0: HIGHEST
1: ASM: class me.desht.pneumaticcraft.common.tileentity.TileEntitySecurityStation$Listener onBlockBreak(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
2: ASM: wayoftime.bloodmagic.util.handler.event.GenericHandler@102a4017 onBreakBlock(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
3: HIGH
4: ASM: class me.shedaniel.architectury.event.forge.EventHandlerImplCommon event(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
5: NORMAL
6: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@32979b46
7: ASM: class net.blay09.mods.kleeslabs.BlockBreakHandler onBreakBlock(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
8: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@556b6513
9: ASM: class com.direwolf20.buildinggadgets.common.events.BreakEventHandler GetDrops(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
10: ASM: class owmii.losttrinkets.handler.EventHandler onBreak(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
11: ASM: class cofh.ensorcellation.event.CommonEvents handleBlockBreakEvent(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
12: ASM: com.lothrazar.cyclic.enchant.EnchantXp@224c7a74 handleBlockBreakEvent(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
13: ASM: stepsword.mahoutsukai.handlers.ServerHandler@32b7b2ff breakEvent(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
14: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@42fa2be
15: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@6c8e40f1
16: ASM: vazkii.quark.content.tweaks.module.HoeHarvestingModule@1ad94135 onBlockBroken(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
17: ASM: com.refinedmods.refinedstorage.apiimpl.network.NetworkNodeListener@2ac8b8ce onBlockBreak(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
18: ASM: com.natamus.justmobheads.events.HeadDropEvent@347d018f onPlayerHeadBreak(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
19: LOW
20: ASM: class cofh.core.event.AreaEffectEvents handleBlockBreakEvent(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
21: LOWEST
22: ASM: com.lothrazar.cyclic.enchant.EnchantExcavation@5028eb61 onBreakEvent(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
23: ASM: class com.simibubi.create.content.curiosities.tools.ExtendoGripItem consumeDurabilityOnBlockBreak(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
24: ASM: class com.simibubi.create.content.curiosities.symmetry.SymmetryHandler onBlockDestroyed(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
25: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@62cdbb8d
26: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@6c00193a
27: ASM: blusunrize.immersiveengineering.common.EventHandler@216256de breakLast(Lnet/minecraftforge/event/world/BlockEvent$BreakEvent;)V
28: net.minecraftforge.eventbus.EventBus$$Lambda$2682/0x0000000840b36040@15c37c56
java.lang.NoSuchMethodError: 'com.mojang.authlib.GameProfile net.minecraft.tileentity.SkullTileEntity.func_152108_a()'
at com.natamus.justmobheads.events.HeadDropEvent.onPlayerHeadBreak(HeadDropEvent.java:156)
at net.minecraftforge.eventbus.ASMEventHandler_1474_HeadDropEvent_onPlayerHeadBreak_BreakEvent.invoke(.dynamic)
at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85)
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302)
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283)
at net.minecraftforge.common.ForgeHooks.onBlockBreakEvent(ForgeHooks.java:602)
at net.minecraft.server.management.PlayerInteractionManager.func_180237_b(PlayerInteractionManager.java:230)
at net.minecraft.server.management.PlayerInteractionManager.func_229860_a_(PlayerInteractionManager.java:220)
at net.minecraft.server.management.PlayerInteractionManager.func_225416_a(PlayerInteractionManager.java:190)
at net.minecraft.network.play.ServerPlayNetHandler.func_147345_a(ServerPlayNetHandler.java:929)
at net.minecraft.network.play.client.CPlayerDiggingPacket.func_148833_a(SourceFile:40)
at net.minecraft.network.play.client.CPlayerDiggingPacket.func_148833_a(SourceFile:10)
at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21)
at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18)
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144)
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23)
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:734)
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:159)
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118)
at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:717)
at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:711)
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127)
at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServer.java:697)
at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:646)
at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232)
at java.base/java.lang.Thread.run(Thread.java:829)

[21Nov2021 01:28:38.490] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Encountered an unexpected exception
java.lang.NoSuchMethodError: 'com.mojang.authlib.GameProfile net.minecraft.tileentity.SkullTileEntity.func_152108_a()'
at com.natamus.justmobheads.events.HeadDropEvent.onPlayerHeadBreak(HeadDropEvent.java:156) ~[justmobheads:1.0]
at net.minecraftforge.eventbus.ASMEventHandler_1474_HeadDropEvent_onPlayerHeadBreak_BreakEvent.invoke(.dynamic) ~[?:?]
at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?]
at net.minecraftforge.common.ForgeHooks.onBlockBreakEvent(ForgeHooks.java:602) ~[forge:?]
at net.minecraft.server.management.PlayerInteractionManager.func_180237_b(PlayerInteractionManager.java:230) ~[?:?]
at net.minecraft.server.management.PlayerInteractionManager.func_229860_a_(PlayerInteractionManager.java:220) ~[?:?]
at net.minecraft.server.management.PlayerInteractionManager.func_225416_a(PlayerInteractionManager.java:190) ~[?:?]
at net.minecraft.network.play.ServerPlayNetHandler.func_147345_a(ServerPlayNetHandler.java:929) ~[?:?]
at net.minecraft.network.play.client.CPlayerDiggingPacket.func_148833_a(SourceFile:40) ~[?:?]
at net.minecraft.network.play.client.CPlayerDiggingPacket.func_148833_a(SourceFile:10) ~[?:?]
at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21) ~[?:?]
at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18) ~[?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) ~[?:?]
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?]
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:734) ~[?:?]
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:159) ~[?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) ~[?:?]
at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:717) ~[?:?]
at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:711) ~[?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127) ~[?:?]
at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServer.java:697) ~[?:?]
at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:646) ~[?:?]
at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) ~[?:?]
at java.lang.Thread.run(Thread.java:829) [?:?]`

Thanks for letting me know and using the mod. Seems like the 1.16.5 had a clientonly method which was changed in 1.17. Anyways, should work now!

https://www.curseforge.com/minecraft/mc-mods/just-mob-heads/files