I am running Arclight jar (fabric with plugins) for 1.20.4 and for some reason YungsAPI keeps crashing the server. Error log below.
---- Minecraft Crash Report ----
// But it works on my machine.

Time: 2024-02-28 07:47:39
Description: Exception initializing level

java.lang.BootstrapMethodError: java.lang.RuntimeException: Mixin transformation of net.minecraft.class_3499 failed
at net.minecraft.class_3781.method_27233(class_3781.java:85)
at net.minecraft.class_3781.method_16627(class_3781.java:111)
at com.yungnickyoung.minecraft.yungsapi.world.structure.jigsaw.JigsawManager.getPosOfJigsawBlockWithName(JigsawManager.java:252)
at com.yungnickyoung.minecraft.yungsapi.world.structure.jigsaw.JigsawManager.getStartPiece(JigsawManager.java:187)
at com.yungnickyoung.minecraft.yungsapi.world.structure.jigsaw.JigsawManager.assembleJigsawStructure(JigsawManager.java:61)
at com.yungnickyoung.minecraft.yungsapi.api.YungJigsawManager.assembleJigsawStructure(YungJigsawManager.java:70)
at com.yungnickyoung.minecraft.yungsapi.world.structure.YungJigsawStructure.method_38676(YungJigsawStructure.java:197)
at net.minecraft.class_3195.method_47932(class_3195.java:199)
at net.minecraft.class_3195.method_41614(class_3195.java:125)
at net.minecraft.class_2794.method_41044(ChunkGeneratorMixin.java:513)
at net.minecraft.class_2794.method_41041(ChunkGeneratorMixin.java:466)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at net.minecraft.class_2794.method_16129(ChunkGeneratorMixin.java:448)
at net.minecraft.class_2806.method_39464(class_2806.java:54)
at net.minecraft.class_2806.method_12154(class_2806.java:252)
at net.minecraft.class_3898.method_17225(ChunkMapMixin.java:671)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at net.minecraft.class_3898.method_17224(ChunkMapMixin.java:660)
at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1150)
at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
at net.minecraft.class_3900.method_17634(class_3900.java:62)
at net.minecraft.class_3846.method_16907(class_3846.java:91)
at net.minecraft.class_3846.method_16900(class_3846.java:146)
at net.minecraft.class_3846.run(class_3846.java:102)
at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)

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

-- Head --
Thread: Server thread
Stacktrace:
at net.minecraft.class_3781.method_27233(class_3781.java:85)
at net.minecraft.class_3781.method_16627(class_3781.java:111)
at com.yungnickyoung.minecraft.yungsapi.world.structure.jigsaw.JigsawManager.getPosOfJigsawBlockWithName(JigsawManager.java:252)
at com.yungnickyoung.minecraft.yungsapi.world.structure.jigsaw.JigsawManager.getStartPiece(JigsawManager.java:187)
at com.yungnickyoung.minecraft.yungsapi.world.structure.jigsaw.JigsawManager.assembleJigsawStructure(JigsawManager.java:61)
at com.yungnickyoung.minecraft.yungsapi.api.YungJigsawManager.assembleJigsawStructure(YungJigsawManager.java:70)
at com.yungnickyoung.minecraft.yungsapi.world.structure.YungJigsawStructure.method_38676(YungJigsawStructure.java:197)
at net.minecraft.class_3195.method_47932(class_3195.java:199)
at net.minecraft.class_3195.method_41614(class_3195.java:125)
at net.minecraft.class_2794.method_41044(ChunkGeneratorMixin.java:513)
at net.minecraft.class_2794.method_41041(ChunkGeneratorMixin.java:466)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at net.minecraft.class_2794.method_16129(ChunkGeneratorMixin.java:448)
at net.minecraft.class_2806.method_39464(class_2806.java:54)
at net.minecraft.class_2806.method_12154(class_2806.java:252)
at net.minecraft.class_3898.method_17225(ChunkMapMixin.java:671)
at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
at net.minecraft.class_3898.method_17224(ChunkMapMixin.java:660)
at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1150)
at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
at net.minecraft.class_3900.method_17634(class_3900.java:62)
at net.minecraft.class_3846.method_16907(class_3846.java:91)
at net.minecraft.class_3846.method_16900(class_3846.java:146)

-- Affected level --
Details:
All players: 0 total; []
Chunk stats: 625
Level dimension: minecraft:overworld
Level spawn location: World: (8,64,8), Section: (at 8,0,8 in 0,4,0; chunk contains blocks 0,-64,0 to 15,319,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,-64,0 to 511,319,511)
Level time: 0 game time, 0 day time
Level name: S2 Prototype1
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Known server brands: fabric arclight/Whisper
Removed feature flags:
Level was modded: true
Level storage version: 0x04ABD - Anvil
Loaded entity count: 0
Stacktrace:
at net.minecraft.class_3218.method_8538(ServerLevelMixin.java:1681)
at net.minecraft.server.MinecraftServer.method_3786(MinecraftServerMixin.java:382)
at net.minecraft.server.MinecraftServer.method_3735(MinecraftServerMixin.java:330)
at net.minecraft.class_3176.method_3823(DedicatedServerMixin.java:169)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServerMixin.java:2074)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServerMixin.java:270)
at java.base/java.lang.Thread.run(Thread.java:833)

-- System Details --
Details:
Minecraft Version: 1.20.4
Minecraft Version ID: 1.20.4
Operating System: Linux (amd64) version 4.15.0-176-generic
Java Version: 17.0.8, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode, sharing), Oracle Corporation
Memory: 188247856 bytes (179 MiB) / 601882624 bytes (574 MiB) up to 4294967296 bytes (4096 MiB)
CPUs: 24
Processor Vendor: GenuineIntel
Processor Name: Intel(R) Xeon(R) CPU E5-2643 v3 @ 3.40GHz
Identifier: Intel64 Family 6 Model 63 Stepping 2
Microarchitecture: Haswell (Server)
Frequency (GHz): 3.40
Number of physical packages: 2
Number of physical CPUs: 12
Number of logical CPUs: 24
Graphics card #0 name: unknown
Graphics card #0 vendor: unknown
Graphics card #0 VRAM (MB): 0.00
Graphics card #0 deviceId: unknown
Graphics card #0 versionInfo: unknown
Virtual memory max (MB): 174695.67
Virtual memory used (MB): 190755.19
Swap memory total (MB): 45773.99
Swap memory used (MB): 10753.17
JVM Flags: 2 total; -Xmx4096M -Xms512M
Fabric Mods:
arclight: Arclight Mod 1.0.3-SNAPSHOT+9a9f08d
betterdungeons: YUNG's Better Dungeons 1.20.4-Fabric-4.4.0
betterendisland: YUNG's Better End Island 1.20.4-Fabric-2.4.0
betterfortresses: YUNG's Better Nether Fortresses 1.20.4-Fabric-2.4.0
org_reflections_reflections: reflections 0.10.2
betterstrongholds: YUNG's Better Strongholds 1.20.4-Fabric-4.4.0
cloth-config: Cloth Config v13 13.0.121
cloth-basic-math: cloth-basic-math 0.6.1
fabric-api: Fabric API 0.96.4+1.20.4
fabric-api-base: Fabric API Base 0.4.36+78d798af4f
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.49+82b1bb3e4f
fabric-biome-api-v1: Fabric Biome API (v1) 13.0.16+78d798af4f
fabric-block-api-v1: Fabric Block API (v1) 1.0.16+3e2216cb4f
fabric-block-view-api-v2: Fabric BlockView API (v2) 1.0.4+78d798af4f
fabric-command-api-v1: Fabric Command API (v1) 1.2.41+f71b366f4f
fabric-command-api-v2: Fabric Command API (v2) 2.2.20+78d798af4f
fabric-commands-v0: Fabric Commands (v0) 0.2.58+df3654b34f
fabric-containers-v0: Fabric Containers (v0) 0.1.86+df3654b34f
fabric-content-registries-v0: Fabric Content Registries (v0) 5.0.14+78d798af4f
fabric-convention-tags-v1: Fabric Convention Tags 1.5.10+78d798af4f
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.23+78d798af4f
fabric-data-attachment-api-v1: Fabric Data Attachment API (v1) 1.1.3+b90db5744f
fabric-data-generation-api-v1: Fabric Data Generation API (v1) 13.2.3+5c0133444f
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.61+78d798af4f
fabric-entity-events-v1: Fabric Entity Events (v1) 1.6.1+09fc25014f
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.7.1+389931eb4f
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.74+df3654b34f
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.46+78d798af4f
fabric-item-api-v1: Fabric Item API (v1) 2.2.0+d6f2b0844f
fabric-item-group-api-v1: Fabric Item Group API (v1) 4.0.25+58f8c0124f
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.3.0+a67ffb5d4f
fabric-loot-api-v2: Fabric Loot API (v2) 2.1.8+78d798af4f
fabric-message-api-v1: Fabric Message API (v1) 6.0.5+78d798af4f
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 2.1.64+78d798af4f
fabric-networking-api-v1: Fabric Networking API (v1) 3.1.7+2e5ac5484f
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 13.0.13+080016e44f
fabric-particles-v1: Fabric Particles (v1) 1.1.7+78d798af4f
fabric-recipe-api-v1: Fabric Recipe API (v1) 2.0.20+78d798af4f
fabric-registry-sync-v0: Fabric Registry Sync (v0) 4.0.19+58f8c0124f
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.42+73761d2e4f
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.1.1+e761c6694f
fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 2.3.14+78d798af4f
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.11.19+58f8c0124f
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.55+78d798af4f
fabric-transfer-api-v1: Fabric Transfer API (v1) 4.0.11+e84342304f
fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 5.0.14+78d798af4f
fabricloader: Fabric Loader 0.15.6
mixinextras: MixinExtras 0.3.2
ferritecore: FerriteCore 6.0.3
java: Java HotSpot(TM) 64-Bit Server VM 17
krypton: Krypton 0.2.6
com_velocitypowered_velocity-native: velocity-native 3.2.0-SNAPSHOT
lazydfu: LazyDFU 0.1.3
memoryleakfix: Memory Leak Fix 1.1.5
minecraft: Minecraft 1.20.4
nochatreports: No Chat Reports 1.20.4-v2.5.0
yungsapi: YUNG's API 1.20.4-Fabric-4.4.1
org_javassist_javassist: javassist 3.29.2-GA
Arclight Release: Whisper
Arclight:
Running: Arclight version arclight-1.20.4-1.0.3-SNAPSHOT-9a9f08d (MC: 1.20.4) (Implementing API version 1.20.4-R0.1-SNAPSHOT) true
Plugins: {}
Warnings: DEFAULT
Reload Count: 0
Threads: { TIMED_WAITING Common-Cleaner: [[email protected]/java.lang.Object.wait(Native Method), [email protected]/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), [email protected]/jdk.internal.ref.CleanerImpl.run(CleanerImpl.java:140), [email protected]/java.lang.Thread.run(Thread.java:833), [email protected]/jdk.internal.misc.InnocuousThread.run(InnocuousThread.java:162)], TIMED_WAITING mysql-cj-abandoned-connection-cleanup: [[email protected]/java.lang.Object.wait(Native Method), [email protected]/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:91), [email protected]/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136), [email protected]/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635), [email protected]/java.lang.Thread.run(Thread.java:833)], TIMED_WAITING Yggdrasil Key Fetcher: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252), [email protected]/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1672), [email protected]/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182), [email protected]/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899), [email protected]/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1062), [email protected]/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122), [email protected]/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635), [email protected]/java.lang.Thread.run(Thread.java:833)], WAITING Worker-Main-19: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-10: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-21: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], RUNNABLE Reference Handler: [[email protected]/java.lang.ref.Reference.waitForReferencePendingList(Native Method), [email protected]/java.lang.ref.Reference.processPendingReferences(Reference.java:253), [email protected]/java.lang.ref.Reference$ReferenceHandler.run(Reference.java:215)], TIMED_WAITING Spigot Metrics Thread: [[email protected]/java.lang.Object.wait(Native Method), [email protected]/java.util.TimerThread.mainLoop(Timer.java:563), [email protected]/java.util.TimerThread.run(Timer.java:516)], TIMED_WAITING IO-Worker-5: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252), [email protected]/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:401), [email protected]/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:903), [email protected]/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061), [email protected]/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122), [email protected]/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635), [email protected]/java.lang.Thread.run(Thread.java:833)], TIMED_WAITING Timer hack thread: [[email protected]/java.lang.Thread.sleep(Native Method), net.minecraft.class_156$9.run(class_156.java:833)], WAITING Worker-Main-17: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-12: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-18: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-20: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-6: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], TIMED_WAITING Worker-Main-23: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.parkUntil(LockSupport.java:410), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1726), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Finalizer: [[email protected]/java.lang.Object.wait(Native Method), [email protected]/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), [email protected]/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:176), [email protected]/java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:172)], WAITING Worker-Main-3: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-4: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-8: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-11: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], RUNNABLE Signal Dispatcher: [], WAITING Worker-Main-2: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-13: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], TIMED_WAITING IO-Worker-2: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252), [email protected]/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:401), [email protected]/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:903), [email protected]/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061), [email protected]/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122), [email protected]/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635), [email protected]/java.lang.Thread.run(Thread.java:833)], WAITING Worker-Main-22: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], TIMED_WAITING process reaper: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252), [email protected]/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:401), [email protected]/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:903), [email protected]/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061), [email protected]/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122), [email protected]/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635), [email protected]/java.lang.Thread.run(Thread.java:833)], WAITING Worker-Main-7: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], RUNNABLE Server thread: [[email protected]/java.lang.Thread.dumpThreads(Native Method), [email protected]/java.lang.Thread.getAllStackTraces(Thread.java:1662), org.bukkit.craftbukkit.v1_20_R3.CraftCrashReport.get(CraftCrashReport.java:33), org.bukkit.craftbukkit.v1_20_R3.CraftCrashReport.get(CraftCrashReport.java:1), net.minecraft.class_6396.method_37123(class_6396.java:66), net.minecraft.class_128.handler$zzc000$arclight$additional(CrashReportMixin.java:522), net.minecraft.class_128.(CrashReportMixin.java:41), net.minecraft.class_128.method_560(CrashReportMixin.java:269), net.minecraft.server.MinecraftServer.method_3786(MinecraftServerMixin.java:380), net.minecraft.server.MinecraftServer.method_3735(MinecraftServerMixin.java:330), net.minecraft.class_3176.method_3823(DedicatedServerMixin.java:169), net.minecraft.server.MinecraftServer.method_29741(MinecraftServerMixin.java:2074), 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[[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Log4j2-AsyncAppenderEventDispatcher-1-Async: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionNode.block(AbstractQueuedSynchronizer.java:506), [email protected]/java.util.concurrent.ForkJoinPool.unmanagedBlock(ForkJoinPool.java:3465), [email protected]/java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3436), 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[email protected]/java.lang.Thread.run(Thread.java:833)], WAITING Worker-Main-1: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING Worker-Main-16: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], RUNNABLE Notification Thread: [], WAITING Worker-Main-5: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], WAITING JNA Cleaner: [[email protected]/java.lang.Object.wait(Native Method), [email protected]/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155), [email protected]/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:176), com.sun.jna.internal.Cleaner$1.run(Cleaner.java:58)], WAITING Worker-Main-15: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341), [email protected]/java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1724), [email protected]/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1623), [email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)], TIMED_WAITING IO-Worker-3: [[email protected]/jdk.internal.misc.Unsafe.park(Native Method), [email protected]/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252), [email protected]/java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:401), [email protected]/java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:903), [email protected]/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1061), [email protected]/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122), [email protected]/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635), [email protected]/java.lang.Thread.run(Thread.java:833)], TIMED_WAITING IO-Worker-4: [[email protected]/jdk.internal.misc.Unsafe.park(Native 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[email protected]/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)],}
Recent tasks from -31--1{}
Force Loaded Chunks: { S2 Prototype1: {},}
Server Running: true
Player Count: 0 / 99; []
Data Packs: vanilla, fabric, betterdungeons, betterendisland, betterfortresses, betterstrongholds, fabric-convention-tags-v1
Enabled Feature Flags: minecraft:vanilla
World Generation: Stable
Is Modded: Definitely; Server brand changed to 'fabric arclight/Whisper'
Type: Dedicated Server (map_server.txt)

Sorry, but I only provide official support for native Forge and Fabric environments. Considering my mods run fine on native Fabric, this is likely an issue with Arclight.