[Bug]: Dragons get stuck on blocks and crash server

[chance633]

What happened?

Dragons will sometimes get stuck in generated structures, in this case outposts from Vampirism iirc, causing the server to crash shortly after a player loads the chunk with the dragon. I suspect it is due to the block protection with their faction system.

Resolution was to run /kill @e[type=iceandfire:red_dragon] before the crash happened, but after the dragon was loaded.

Minecraft Version

1.20.1

Ice and Fire version

2.1.13-1.20.1-beta-5-jar

Citadel version

2.6.1-1.20.1

Relevant log output

---- Minecraft Crash Report ----
// Why did you do that?

Time: 2025-01-23 10:44:14
Description: Watching Server

java.lang.Error: ServerHangWatchdog detected that a single server tick took 60.01 seconds (should be max 0.05)
	at jdk.internal.misc.Unsafe.park(Native Method) ~[?:?] {}
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:269) ~[?:?] {}
	at net.minecraft.util.thread.BlockableEventLoop.m_5667_(BlockableEventLoop.java:151) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] 

--

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

-- Head --
Thread: Server Watchdog
Suspected Mod: 
	Ice and Fire (iceandfire), Version: 2.1.13-1.20.1
		Issue tracker URL: https://github.com/Alex-the-666/ice-and-fire/issues
		at TRANSFORMER/[email protected]/com.github.alexthe666.iceandfire.entity.EntityDragonBase.isTargetBlocked(EntityDragonBase.java:1951)
Stacktrace:
	at jdk.internal.misc.Unsafe.park(Native Method) ~[?:?] {}
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:269) ~[?:?] {}
	at net.minecraft.util.thread.BlockableEventLoop.m_5667_(BlockableEventLoop.java:151) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
	at net.minecraft.util.thread.BlockableEventLoop.m_18701_(BlockableEventLoop.java:141) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.level.ServerChunkCache.m_7587_(ServerChunkCache.java:131) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
	at net.minecraft.world.level.Level.m_6522_(Level.java:187) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:computing_frames,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:classloading,pl:accesstransformer:B,xf:fml:twilightforest:cloud,pl:mixin:APP:aether.mixins.json:common.accessor.LevelAccessor,pl:mixin:APP:citadel.mixins.json:LevelMixin,pl:mixin:APP:kubejs-common.mixins.json:LevelMixin,pl:mixin:APP:gtceu.mixins.json:LevelMixin,pl:mixin:A}
	at net.minecraft.world.level.LevelReader.m_46819_(LevelReader.java:129) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:computing_frames,re:mixin,re:classloading}
	at net.minecraft.world.level.Level.m_6325_(Level.java:182) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:computing_frames,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:classloading,pl:accesstransformer:B,xf:fml:twilightforest:cloud,pl:mixin:APP:aether.mixins.json:common.accessor.LevelAccessor,pl:mixin:APP:citadel.mixins.json:LevelMixin,pl:mixin:APP:kubejs-common.mixins.json:LevelMixin,pl:mixin:APP:gtceu.mixins.json:LevelMixin,pl:mixin:A}
	at net.minecraft.world.level.Level.m_8055_(Level.java:355) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:computing_frames,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:classloading,pl:accesstransformer:B,xf:fml:twilightforest:cloud,pl:mixin:APP:aether.mixins.json:common.accessor.LevelAccessor,pl:mixin:APP:citadel.mixins.json:LevelMixin,pl:mixin:APP:kubejs-common.mixins.json:LevelMixin,pl:mixin:APP:gtceu.mixins.json:LevelMixin,pl:mixin:A}
	at net.minecraft.world.level.BlockGetter.m_151358_(BlockGetter.java:59) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:computing_frames,re:mixin,re:classloading}
	at net.minecraft.world.level.BlockGetter$$Lambda/0x000001925023d4c0.apply(Unknown Source) ~[?:?] {}
	at net.minecraft.world.level.BlockGetter.m_151361_(BlockGetter.java:153) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:computing_frames,re:mixin,re:classloading}
	at net.minecraft.world.level.BlockGetter.m_45547_(BlockGetter.java:58) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:computing_frames,re:mixin,re:classloading}
	at com.github.alexthe666.iceandfire.entity.EntityDragonBase.isTargetBlocked(EntityDragonBase.java:1951) ~[iceandfire-2.1.13-1.20.1-beta-5.jar%23396!/:2.1.13-1.20.1] {re:classloading}
	at com.github.alexthe666.iceandfire.entity.util.DragonUtils.getBlockInView(DragonUtils.java:77) ~[iceandfire-2.1.13-1.20.1-beta-5.jar%23396!/:2.1.13-1.20.1] {re:classloading}
	at com.github.alexthe666.iceandfire.entity.IafDragonFlightManager.update(IafDragonFlightManager.java:110) ~[iceandfire-2.1.13-1.20.1-beta-5.jar%23396!/:2.1.13-1.20.1] {re:classloading}
	at com.github.alexthe666.iceandfire.entity.EntityDragonBase.m_8119_(EntityDragonBase.java:1751) ~[iceandfire-2.1.13-1.20.1-beta-5.jar%23396!/:2.1.13-1.20.1] {re:classloading}
	at net.minecraft.server.level.ServerLevel.m_8647_(ServerLevel.java:693) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:cupboard.mixins.json:ServerAddEntityMixin,pl:mixin:APP:betterendisland.mixins.json:ServerLevelMixin,pl:mixin:APP:krypton.mixins.json:server.fastchunkentityaccess.ServerWorldMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.ServerWorldMixin,pl:mixin:APP:glitchcore.mixins.json:MixinServerLevel,pl:mixin:APP:ohthetreesyoullgrow.mixins.json:MixinServerLevel,pl:mixin:APP:corgilib-common.mixins.json:MixinServerLevel,pl:mixin:APP:aether.mixins.json:common.accessor.ServerLevelAccessor,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:mixins.biomancy.json:ServerLevelMixin,pl:mixin:APP:mixins.biomancy.json:accessor.ServerLevelAccessor,pl:mixin:APP:kubejs-common.mixins.json:ServerLevelMixin,pl:mixin:APP:betterdeserttemples.mixins.json:ServerLevelMixin,pl:mixin:APP:gcyr.mixins.json:ServerLevelMixin,pl:mixin:APP:supplementaries-common.mixins.json:ServerLevelMixin,pl:mixin:APP:ars_elemental.mixins.json:ServerLevelMixin,pl:mixin:APP:create.mixins.json:accessor.ServerLevelAccessor,pl:mixin:APP:betterendisland.mixins.json:EndergeticExpansionMixins,pl:mixin:A}
	at net.minecraft.server.level.ServerLevel$$Lambda/0x0000019250218800.accept(Unknown Source) ~[?:?] {}
	at net.minecraft.world.level.Level.m_46653_(Level.java:479) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:computing_frames,pl:accesstransformer:B,xf:fml:twilightforest:cloud,re:classloading,pl:accesstransformer:B,xf:fml:twilightforest:cloud,pl:mixin:APP:aether.mixins.json:common.accessor.LevelAccessor,pl:mixin:APP:citadel.mixins.json:LevelMixin,pl:mixin:APP:kubejs-common.mixins.json:LevelMixin,pl:mixin:APP:gtceu.mixins.json:LevelMixin,pl:mixin:A}
	at net.minecraft.server.level.ServerLevel.m_184063_(ServerLevel.java:343) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:cupboard.mixins.json:ServerAddEntityMixin,pl:mixin:APP:betterendisland.mixins.json:ServerLevelMixin,pl:mixin:APP:krypton.mixins.json:server.fastchunkentityaccess.ServerWorldMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.ServerWorldMixin,pl:mixin:APP:glitchcore.mixins.json:MixinServerLevel,pl:mixin:APP:ohthetreesyoullgrow.mixins.json:MixinServerLevel,pl:mixin:APP:corgilib-common.mixins.json:MixinServerLevel,pl:mixin:APP:aether.mixins.json:common.accessor.ServerLevelAccessor,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:mixins.biomancy.json:ServerLevelMixin,pl:mixin:APP:mixins.biomancy.json:accessor.ServerLevelAccessor,pl:mixin:APP:kubejs-common.mixins.json:ServerLevelMixin,pl:mixin:APP:betterdeserttemples.mixins.json:ServerLevelMixin,pl:mixin:APP:gcyr.mixins.json:ServerLevelMixin,pl:mixin:APP:supplementaries-common.mixins.json:ServerLevelMixin,pl:mixin:APP:ars_elemental.mixins.json:ServerLevelMixin,pl:mixin:APP:create.mixins.json:accessor.ServerLevelAccessor,pl:mixin:APP:betterendisland.mixins.json:EndergeticExpansionMixins,pl:mixin:A}
	at net.minecraft.server.level.ServerLevel$$Lambda/0x00000192502051a0.accept(Unknown Source) ~[?:?] {}
	at net.minecraft.world.level.entity.EntityTickList.m_156910_(EntityTickList.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:classloading}
	at net.minecraft.server.level.ServerLevel.m_8793_(ServerLevel.java:323) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:cupboard.mixins.json:ServerAddEntityMixin,pl:mixin:APP:betterendisland.mixins.json:ServerLevelMixin,pl:mixin:APP:krypton.mixins.json:server.fastchunkentityaccess.ServerWorldMixin,pl:mixin:APP:pehkui.mixins.json:compat117plus.ServerWorldMixin,pl:mixin:APP:glitchcore.mixins.json:MixinServerLevel,pl:mixin:APP:ohthetreesyoullgrow.mixins.json:MixinServerLevel,pl:mixin:APP:corgilib-common.mixins.json:MixinServerLevel,pl:mixin:APP:aether.mixins.json:common.accessor.ServerLevelAccessor,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:mixins.biomancy.json:ServerLevelMixin,pl:mixin:APP:mixins.biomancy.json:accessor.ServerLevelAccessor,pl:mixin:APP:kubejs-common.mixins.json:ServerLevelMixin,pl:mixin:APP:betterdeserttemples.mixins.json:ServerLevelMixin,pl:mixin:APP:gcyr.mixins.json:ServerLevelMixin,pl:mixin:APP:supplementaries-common.mixins.json:ServerLevelMixin,pl:mixin:APP:ars_elemental.mixins.json:ServerLevelMixin,pl:mixin:APP:create.mixins.json:accessor.ServerLevelAccessor,pl:mixin:APP:betterendisland.mixins.json:EndergeticExpansionMixins,pl:mixin:A}
	at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:893) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:citadel.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:inject_resources.MinecraftServerMixin,pl:mixin:APP:ru.mixin.json:MinecraftServerMixin,pl:mixin:APP:ae2.mixins.json:spatial.MinecraftServerMixin,pl:mixin:A}
	at net.minecraft.server.dedicated.DedicatedServer.m_5703_(DedicatedServer.java:283) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:citadel.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:inject_resources.MinecraftServerMixin,pl:mixin:APP:ru.mixin.json:MinecraftServerMixin,pl:mixin:APP:ae2.mixins.json:spatial.MinecraftServerMixin,pl:mixin:A}
	at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:citadel.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:inject_resources.MinecraftServerMixin,pl:mixin:APP:ru.mixin.json:MinecraftServerMixin,pl:mixin:APP:ae2.mixins.json:spatial.MinecraftServerMixin,pl:mixin:A}
	at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23493!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:citadel.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:APP:kubejs-common.mixins.json:inject_resources.MinecraftServerMixin,pl:mixin:APP:ru.mixin.json:MinecraftServerMixin,pl:mixin:APP:ae2.mixins.json:spatial.MinecraftServerMixin,pl:mixin:A}
	at net.minecraft.server.MinecraftServer$$Lambda/0x000001924feb3640.run(Unknown Source) ~[?:?] {}

Other Information

• I am using other mods besides Ice and Fire
• I have attached a log file from the session that I have experienced this issue