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Forge 1.20.1 Crash Report

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Software: Forge Version: 1.20.1 (47.4.10)
Detected
Minecraft version: 1.20.1 Java version: 17.0.19 Forge version: 47.4.10
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---- Minecraft Crash Report ----
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// Would you like a cupcake?
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Time: 2026-08-15 14:01:27
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Description: Exception in server tick loop
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java.util.ConcurrentModificationException: null
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at java.util.HashMap$HashIterator.nextNode(HashMap.java:1597) ~[?:?] {}
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at java.util.HashMap$KeyIterator.next(HashMap.java:1620) ~[?:?] {}
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at java.lang.Iterable.forEach(Iterable.java:74) ~[?:?] {re:mixin}
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at net.minecraft.server.level.DistanceManager.m_140805_(DistanceManager.java:119) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B}
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at net.minecraft.server.level.ServerChunkCache.m_8489_(ServerChunkCache.java:273) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B}
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at net.minecraft.server.level.ServerChunkCache$MainThreadExecutor.m_7245_(ServerChunkCache.java:545) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading}
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at net.minecraft.server.level.ServerChunkCache.m_8466_(ServerChunkCache.java:269) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B}
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at net.minecraft.server.MinecraftServer.m_129961_(MinecraftServer.java:758) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B}
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at net.minecraft.server.MinecraftServer.m_7245_(MinecraftServer.java:747) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B}
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at net.minecraft.util.thread.BlockableEventLoop.m_18701_(BlockableEventLoop.java:139) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B}
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at net.minecraft.server.MinecraftServer.m_130012_(MinecraftServer.java:733) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B}
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at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:665) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B}
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at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23147!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B}
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at java.lang.Thread.run(Thread.java:840) ~[?:?] {}
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A detailed walkthrough of the error, its code path and all known details is as follows:
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---------------------------------------------------------------------------------------
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-- System Details --
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Details:
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Minecraft Version: 1.20.1
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Minecraft Version ID: 1.20.1
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Operating System: Linux (amd64) version 6.8.0-124-generic
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Java Version: 17.0.19, Eclipse Adoptium
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Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Eclipse Adoptium
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Memory: 670515032 bytes (639 MiB) / 2170552320 bytes (2070 MiB) up to 2170552320 bytes (2070 MiB)
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CPUs: 2
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Processor Vendor: AuthenticAMD
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Processor Name: AMD EPYC 7402P 24-Core Processor
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Identifier: AuthenticAMD Family 23 Model 49 Stepping 0
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Microarchitecture: Zen 2
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Frequency (GHz): -0.00
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Number of physical packages: 1
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Number of physical CPUs: 24
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Number of logical CPUs: 48
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Graphics card #0 name: unknown
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Graphics card #0 vendor: unknown
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Graphics card #0 VRAM (MB): 0.00
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Graphics card #0 deviceId: unknown
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Graphics card #0 versionInfo: unknown
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Virtual memory max (MB): 129820.75
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Virtual memory used (MB): 190466.63
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Swap memory total (MB): 1024.00
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Swap memory used (MB): 426.85
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JVM Flags: 3 total; -XX:MaxMetaspaceSize=270M -Xmx2070M -Xms1035M
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Server Running: true
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Player Count: 4 / 5; [ServerPlayer['sentos2015'/7479, l='ServerLevel[Москва-Сити]', x=1535.13, y=16.51, z=1300.56], ServerPlayer['MaksimBosov'/7489, l='ServerLevel[Москва-Сити]', x=3306.89, y=107.92, z=1504.55], ServerPlayer['pomidorkamc3253'/7501, l='ServerLevel[Москва-Сити]', x=3274.29, y=34.59, z=1663.89], ServerPlayer['pavlusha_s'/9269, l='ServerLevel[Москва-Сити]', x=2633.71, y=7.22, z=1413.60]]
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Data Packs: vanilla, mod:forge, mod:glitchcore (incompatible), mod:sereneseasons, mod:framework, mod:refurbished_furniture, mod:worldedit (incompatible), mod:geckolib, mod:superbwarfare, mod:curios (incompatible), mod:mtsofficialpack (incompatible), mod:mts (incompatible), mod:farmersdelight, mod:mixinextras (incompatible), mod:brewinandchewin, mod:oamp (incompatible), mod:mcwdoors, mod:mcwwindows, mod:journeymap (incompatible), mod:securitycraft, mod:moonspiremetromotors (incompatible), mod:unuverse (incompatible), mod:kotlinforforge (incompatible), mod:simplebedrockmodel, mod:mcsp, mod:unuparts (incompatible), superbwarfare:resourcepacks/sbw_legacy, mod:unucivil (incompatible)
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Enabled Feature Flags: minecraft:vanilla
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World Generation: Stable
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Is Modded: Definitely; Server brand changed to 'forge'
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Type: Dedicated Server (map_server.txt)
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ModLauncher: 10.0.9+10.0.9+main.dcd20f30
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ModLauncher launch target: forgeserver
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ModLauncher naming: srg
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ModLauncher services:
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mixin-0.8.5.jar mixin PLUGINSERVICE
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eventbus-6.0.5.jar eventbus PLUGINSERVICE
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fmlloader-1.20.1-47.4.10.jar slf4jfixer PLUGINSERVICE
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fmlloader-1.20.1-47.4.10.jar object_holder_definalize PLUGINSERVICE
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fmlloader-1.20.1-47.4.10.jar runtime_enum_extender PLUGINSERVICE
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fmlloader-1.20.1-47.4.10.jar capability_token_subclass PLUGINSERVICE
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accesstransformers-8.0.4.jar accesstransformer PLUGINSERVICE
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fmlloader-1.20.1-47.4.10.jar runtimedistcleaner PLUGINSERVICE
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modlauncher-10.0.9.jar mixin TRANSFORMATIONSERVICE
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modlauncher-10.0.9.jar fml TRANSFORMATIONSERVICE
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FML Language Providers:
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minecraft@1.0
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kotlinforforge@4.12.0
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javafml@null
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lowcodefml@null
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Mod List:
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server-1.20.1-20230612.114412-srg.jar |Minecraft |minecraft |1.20.1 |DONE |Manifest: NOSIGNATURE
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FarmersDelight-1.20.1-1.2.11.jar |Farmer's Delight |farmersdelight |1.20.1-1.2.11 |DONE |Manifest: NOSIGNATURE
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MTS Official Pack-1.20.1-V29.jar |Immersive Vehicles (MTS/IV) - |mtsofficialpack |29 |DONE |Manifest: NOSIGNATURE
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Moonspire Metropolitan Motors-1.20.1-V3.0.0.jar |Moonspire Metropolitan Motors |moonspiremetromotors |3.0.0 |DONE |Manifest: NOSIGNATURE
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OAmP-1.20.1-V3.jar |Immersive Vehicles (MTS/IV) - |oamp |3 |DONE |Manifest: NOSIGNATURE
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geckolib-forge-1.20.1-4.8.3.jar |GeckoLib 4 |geckolib |4.8.3 |DONE |Manifest: NOSIGNATURE
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UNU Civilian Pack [MTS] 1.20.1-22.18.0-6.7.1.jar |UNU Civilian Vehicles |unucivil |6.7.1 |DONE |Manifest: NOSIGNATURE
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mcw-mcwwindows-2.4.2-mc1.20.1forge.jar |Macaw's Windows |mcwwindows |2.4.2 |DONE |Manifest: NOSIGNATURE
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Expanded UNUverse Pack [MTS] 1.20.1-22.18.0-2.1.3.|Expanded UNUverse Pack |unuverse |2.1.3 |DONE |Manifest: NOSIGNATURE
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kffmod-4.12.0.jar |Kotlin For Forge |kotlinforforge |4.12.0 |DONE |Manifest: NOSIGNATURE
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BrewinAndChewin-1.20.1-3.2.1.jar |Brewin' And Chewin' |brewinandchewin |1.20.1-3.2.1 |DONE |Manifest: NOSIGNATURE
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curios-forge-5.14.1+1.20.1.jar |Curios API |curios |5.14.1+1.20.1 |DONE |Manifest: NOSIGNATURE
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simplebedrockmodel-2.3.3-forge-mc1.20.1.jar |SimpleBedrockModel |simplebedrockmodel |2.3.3-forge-mc1.20.1|DONE |Manifest: NOSIGNATURE
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journeymap-1.20.1-5.10.3-forge.jar |Journeymap |journeymap |5.10.3 |DONE |Manifest: NOSIGNATURE
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[1.20.1] SecurityCraft v1.10.1.jar |SecurityCraft |securitycraft |1.10.1 |DONE |Manifest: NOSIGNATURE
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mixinextras-forge-0.3.6.jar |MixinExtras |mixinextras |0.3.6 |DONE |Manifest: NOSIGNATURE
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GlitchCore-forge-1.20.1-0.0.1.1.jar |GlitchCore |glitchcore |**.**.**.** |DONE |Manifest: NOSIGNATURE
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SereneSeasons-forge-1.20.1-9.1.0.2.jar |Serene Seasons |sereneseasons |**.**.**.** |DONE |Manifest: NOSIGNATURE
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worldedit-mod-7.2.15.jar |WorldEdit |worldedit |7.2.15+6463-5ca4dff |DONE |Manifest: NOSIGNATURE
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mcw-doors-1.1.5-mc1.20.1forge.jar |Macaw's Doors |mcwdoors |1.1.5 |DONE |Manifest: NOSIGNATURE
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superbwarfare-0.8.9-final-mc1.20.1-6effe4385-all.j|Superb Warfare |superbwarfare |0.8.9 |DONE |Manifest: NOSIGNATURE
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MCSP-1.20.1-V1.0.10.jar |MCSP |mcsp |1.0.10 |DONE |Manifest: NOSIGNATURE
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Immersive Vehicles-1.20.1-23.0.0.jar |Immersive Vehicles (formerly M|mts |23.0.0 |DONE |Manifest: NOSIGNATURE
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refurbished_furniture-forge-1.20.1-1.0.20.jar |MrCrayfish's Furniture Mod: Re|refurbished_furniture |1.0.20 |DONE |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****
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UNU Parts Pack [MTS] 1.20.1-22.18.0-6.7.3.jar |UNU Parts Pack |unuparts |6.7.3 |DONE |Manifest: NOSIGNATURE
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framework-forge-1.20.1-0.8.0.jar |Framework |framework |0.8.0 |DONE |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****
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forge-1.20.1-47.4.10-universal.jar |Forge |forge |47.4.10 |DONE |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****
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Crash Report UUID: c64ba5ac-0888-4022-b8c6-0d6926ad448b
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FML: 47.4
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Forge: net.minecraftforge:47.4.10
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