Hello!

If pistons move for a while or a block pushes, MC crashes after a very short time.

---- Minecraft Crash Report ----
// Why is it breaking :(

Time: 2023-11-08 18:44:37
Description: Batching chunks

java.util.ConcurrentModificationException
at java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1597)
at java.base/java.util.HashMap$EntryIterator.next(HashMap.java:1630)
at java.base/java.util.HashMap$EntryIterator.next(HashMap.java:1628)
at java.base/java.util.AbstractCollection.toArray(AbstractCollection.java:202)
at com.google.common.collect.Iterables.toArray(Iterables.java:300)
at com.google.common.collect.ImmutableMap.copyOf(ImmutableMap.java:701)
at com.google.common.collect.ImmutableMap.copyOf(ImmutableMap.java:686)
at net.minecraft.class_6849.(class_6849.java:33)
at net.minecraft.class_6850$class_6851.method_39972(class_6850.java:106)
at net.minecraft.class_6850.createRegion(class_6850.java:55)
at net.minecraft.class_846$class_851.makeChunkCacheOF(class_846.java:1391)
at net.minecraft.class_846$class_851$class_4578.method_22785(class_846.java:976)
at net.minecraft.class_846$class_851$class_4578.method_22783(class_846.java:914)
at net.minecraft.class_846.method_22757(class_846.java:197)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
at java.base/java.util.concurrent.ForkJoinPool$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: Render thread
Stacktrace:
at java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1597)
at java.base/java.util.HashMap$EntryIterator.next(HashMap.java:1630)
at java.base/java.util.HashMap$EntryIterator.next(HashMap.java:1628)
at java.base/java.util.AbstractCollection.toArray(AbstractCollection.java:202)
at com.google.common.collect.Iterables.toArray(Iterables.java:300)

-- Affected level --
Details:
All players: 1 total; [class_746['Qoolize'/44, l='ClientLevel', x=21.13, y=68.00, z=-645.94]]
Chunk stats: 961, 609
Level dimension: minecraft:overworld
Level spawn location: World: (-71,77,-650), Section: (at 9,13,6 in -5,4,-41; chunk contains blocks -80,-64,-656 to -65,319,-641), Region: (-1,-2; contains chunks -32,-64 to -1,-33, blocks -512,-64,-1024 to -1,319,-513)
Level time: 826434 game time, 6000 day time
Server brand: fabric
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.class_638.method_8538(class_638.java:590)
at net.minecraft.class_310.method_1587(class_310.java:2406)
at net.minecraft.class_310.method_43589(class_310.java:895)
at net.minecraft.class_310.method_1514(class_310.java:791)
at net.minecraft.client.main.Main.main(Main.java:250)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:468)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)

-- Last reload --
Details:
Reload number: 1
Reload reason: initial
Finished: Yes
Packs: vanilla, fabric, file/VanillaTweaks_r881794.zip

-- System Details --
Details:
Minecraft Version: 1.20.1
Minecraft Version ID: 1.20.1
Operating System: Windows 7 (amd64) version 6.1
Java Version: 17.0.8, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode, sharing), Oracle Corporation
Memory: 2820611504 bytes (2689 MiB) / 4013948928 bytes (3828 MiB) up to 6442450944 bytes (6144 MiB)
CPUs: 4
Processor Vendor: AuthenticAMD
Processor Name: AMD FX(tm)-4100 Quad-Core Processor
Identifier: AuthenticAMD Family 21 Model 1 Stepping 2
Microarchitecture: Bulldozer
Frequency (GHz): 3.62
Number of physical packages: 1
Number of physical CPUs: 2
Number of logical CPUs: 4
Graphics card #0 name: NVIDIA GeForce GTX 770
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 2048.00
Graphics card #0 deviceId: 0x1184
Graphics card #0 versionInfo: DriverVersion=30.0.14.7212
Memory slot #0 capacity (MB): 8192.00
Memory slot #0 clockSpeed (GHz): 1.60
Memory slot #0 type: Other
Memory slot # 1 capacity (MB): 8192.00
Memory slot # 1 clockSpeed (GHz): 1.60
Memory slot # 1 type: Other
Virtual memory max (MB): 32730.38
Virtual memory used (MB): 10785.54
Swap memory total (MB): 16364.26
Swap memory used (MB): 0.00
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms512m -Xmx6144m
Fabric Mods:
bigpony: Big Pony 1.10.0
command-block-ide: Command Block IDE 0.4.4
fabric-api: Fabric API 0.85.0+1.20.1
fabric-api-base: Fabric API Base 0.4.29+b04edc7a77
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.34+4d8536c977
fabric-biome-api-v1: Fabric Biome API (v1) 13.0.10+b3afc78b77
fabric-block-api-v1: Fabric Block API (v1) 1.0.9+e022e5d177
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.39+b3afc78b77
fabric-client-tags-api-v1: Fabric Client Tags 1.1.0+97bb207577
fabric-command-api-v1: Fabric Command API (v1) 1.2.32+f71b366f77
fabric-command-api-v2: Fabric Command API (v2) 2.2.11+b3afc78b77
fabric-commands-v0: Fabric Commands (v0) 0.2.49+df3654b377
fabric-containers-v0: Fabric Containers (v0) 0.1.61+df3654b377
fabric-content-registries-v0: Fabric Content Registries (v0) 4.0.8+b3afc78b77
fabric-convention-tags-v1: Fabric Convention Tags 1.5.3+b3afc78b77
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.18+aeb40ebe77
fabric-data-generation-api-v1: Fabric Data Generation API (v1) 12.1.12+b3afc78b77
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.51+b3afc78b77
fabric-entity-events-v1: Fabric Entity Events (v1) 1.5.21+b3afc78b77
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.6.0+b3afc78b77
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.61+df3654b377
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.38+b04edc7a77
fabric-item-api-v1: Fabric Item API (v1) 2.1.26+b3afc78b77
fabric-item-group-api-v1: Fabric Item Group API (v1) 4.0.8+40e50c4677
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.36+fb8d95da77
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.34+df3654b377
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.2.20+b3afc78b77
fabric-loot-api-v2: Fabric Loot API (v2) 1.1.38+b3afc78b77
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.1.42+9e7660c677
fabric-message-api-v1: Fabric Message API (v1) 5.1.6+b3afc78b77
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 2.1.48+b3afc78b77
fabric-models-v0: Fabric Models (v0) 0.3.35+b3afc78b77
fabric-networking-api-v1: Fabric Networking API (v1) 1.3.8+b3afc78b77
fabric-networking-v0: Fabric Networking (v0) 0.3.48+df3654b377
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 11.1.0+6beca84877
fabric-particles-v1: Fabric Particles (v1) 1.1.0+201a23a077
fabric-recipe-api-v1: Fabric Recipe API (v1) 1.0.18+b3afc78b77
fabric-registry-sync-v0: Fabric Registry Sync (v0) 2.2.6+b3afc78b77
fabric-renderer-api-v1: Fabric Renderer API (v1) 3.1.0+c154966e77
fabric-renderer-indigo: Fabric Renderer - Indigo 1.4.0+c154966e77
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.44+df3654b377
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.33+b3afc78b77
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.0.26+b3afc78b77
fabric-rendering-v0: Fabric Rendering (v0) 1.1.47+df3654b377
fabric-rendering-v1: Fabric Rendering (v1) 3.0.6+b3afc78b77
fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 2.3.5+ea08f9d877
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.11.8+e3d6ed2577
fabric-screen-api-v1: Fabric Screen API (v1) 2.0.6+b3afc78b77
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.27+b3afc78b77
fabric-sound-api-v1: Fabric Sound API (v1) 1.0.12+b3afc78b77
fabric-transfer-api-v1: Fabric Transfer API (v1) 3.2.3+43a3fedd77
fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 4.2.0+b3afc78b77
fabricloader: Fabric Loader 0.14.22
freecam: Freecam 1.2.1+1.20
cloth-config: Cloth Config v11 11.1.106
cloth-basic-math: cloth-basic-math 0.6.1
g4mespeed: G4mespeed 1.4.5
g4mespeed-ui: G4mespeed UI 0.9.10
hdskins: HD Skins 6.10.2+1.20
kirin: Kirin UI 1.15.2
java: Java HotSpot(TM) 64-Bit Server VM 17
minecraft: Minecraft 1.20.1
minelp: Mine Little Pony 4.10.1+1.20
mson: Mson 1.8.1
mobhealthbar: MobHealthBar 2.2.0
modmenu: Mod Menu 7.2.2
optifabric: OptiFabric 1.13.25
mm: Manningham Mills 2.3
taterzens: Taterzens 1.11.7
config2brigadier: Config to Brigadier 1.2.6
fabric-permissions-api-v0: fabric-permissions-api 0.1-SNAPSHOT
polymer-registry-sync-manipulator: Polymer (Registry Sync Manipulator) 0.5.0-rc.2+1.20-rc1
server_translations_api: Server Translations API 2.0.0-beta.2+1.19.4-pre2
packet_tweaker: Packet Tweaker 0.3.1+23w06a
sgui: sgui 1.2.2+1.20
worldedit: WorldEdit 7.2.15+6463-5ca4dff
worldeditcui: WorldEditCUI 1.20+01
Launched Version: 1.20.1
Backend library: LWJGL version 3.3.1 SNAPSHOT
Backend API: NVIDIA GeForce GTX 770/PCIe/SSE2 GL version 3.2.0 NVIDIA 472.12, NVIDIA Corporation
Window size: 1920x1058
GL Caps: Using framebuffer using OpenGL 3.2
GL debug messages:
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'optifine'; Server brand changed to 'fabric'
Type: Integrated Server (map_client.txt)
Graphics mode: fast
Resource Packs: vanilla, fabric, file/VanillaTweaks_r881794.zip
Current Language: de_de
CPU: 4x AMD FX(tm)-4100 Quad-Core Processor
Server Running: true
Player Count: 1 / 8; [class_3222['Qoolize'/44, l='ServerLevel[RedstoneWeltV3]', x=21.13, y=68.00, z=-645.94]]
Data Packs: vanilla, fabric
Enabled Feature Flags: minecraft:vanilla
World Generation: Stable
OptiFine Version: OptiFine_1.20.1_HD_U_I5
OptiFine Build: 20230707-211226
Render Distance Chunks: 12
Mipmaps: 0
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 3.2.0 NVIDIA 472.12
OpenGlRenderer: NVIDIA GeForce GTX 770/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 4

-- OptiFabric --
Details:
OptiFine jar designed for: 1.20.1
OptiFine jar version: OptiFine_1.20.1_HD_U_I5
OptiFine jar status: Valid OptiFine installer
OptiFine remapped jar: D:/Spiele/Minecraft/MultiMC/instances/1.20.1/.minecraft/.optifine/OptiFine_1.20.1_HD_U_I5/Optifine-mapped.jar
OptiFabric error: (None)

Thanks for help!

~Qoo