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NeoForge 1.21.1 Crash Report

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Detected
Minecraft version: 1.21.1 Java version: 21.0.9 NeoForge version: 21.1.216
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---- Minecraft Crash Report ----
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// Who set us up the TNT?
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Time: 2025-12-06 00:41:40
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Description: Unexpected error
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java.lang.UnsupportedOperationException: null
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at TRANSFORMER/railcraft@1.2.9/mods.railcraft.world.entity.vehicle.RailcraftMinecart.getMinecartType(RailcraftMinecart.java:163) ~[railcraft-reborn-1.21.1-1.2.9.jar%23181!/:1.21.1-1.2.9] {re:classloading}
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at TRANSFORMER/create@6.0.8/com.simibubi.create.content.contraptions.mounted.MinecartContraptionItem.wrenchCanBeUsedToPickUpMinecartContraptions(MinecartContraptionItem.java:225) ~[create-1.21.1-6.0.8.jar%23180!/:6.0.8] {re:classloading}
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at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.SubscribeEventListener.invoke(SubscribeEventListener.java:50) ~[bus-8.0.5.jar%23152!/:?] {}
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at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:360) ~[bus-8.0.5.jar%23152!/:?] {}
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at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:328) ~[bus-8.0.5.jar%23152!/:?] {}
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at TRANSFORMER/neoforge@21.1.216/net.neoforged.neoforge.common.CommonHooks.onInteractEntity(CommonHooks.java:799) ~[neoforge-21.1.216-universal.jar%23179!/:?] {re:classloading}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.world.entity.player.Player.interactOn(Player.java:1058) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:create.mixins.json:PlayerMixin from mod create,pl:mixin:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.multiplayer.MultiPlayerGameMode.interact(MultiPlayerGameMode.java:424) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:classloading,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.startUseItem(Minecraft.java:1730) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.handleKeybinds(Minecraft.java:2023) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.tick(Minecraft.java:1837) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.runTick(Minecraft.java:1161) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.run(Minecraft.java:807) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.main.Main.main(Main.java:230) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:classloading,pl:runtimedistcleaner:A}
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at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
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at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:136) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:124) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonClientLaunchHandler.runService(CommonClientLaunchHandler.java:32) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonLaunchHandler.lambda$launchService$4(CommonLaunchHandler.java:118) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.Launcher.run(Launcher.java:103) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.Launcher.main(Launcher.java:74) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-11.0.5.jar%23154!/:?] {}
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at cpw.mods.bootstraplauncher@2.0.2/cpw.mods.bootstraplauncher.BootstrapLauncher.run(BootstrapLauncher.java:210) [bootstraplauncher-2.0.2.jar:?] {}
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at cpw.mods.bootstraplauncher@2.0.2/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:69) [bootstraplauncher-2.0.2.jar:?] {}
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at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
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at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
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at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67) [ForgeWrapper-prism-2025-10-07.jar:prism-2025-10-07] {}
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at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) [NewLaunch.jar:?] {}
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at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?] {}
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at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?] {}
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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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-- Head --
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Thread: Render thread
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Stacktrace:
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at TRANSFORMER/railcraft@1.2.9/mods.railcraft.world.entity.vehicle.RailcraftMinecart.getMinecartType(RailcraftMinecart.java:163) ~[railcraft-reborn-1.21.1-1.2.9.jar%23181!/:1.21.1-1.2.9] {re:classloading}
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at TRANSFORMER/create@6.0.8/com.simibubi.create.content.contraptions.mounted.MinecartContraptionItem.wrenchCanBeUsedToPickUpMinecartContraptions(MinecartContraptionItem.java:225) ~[create-1.21.1-6.0.8.jar%23180!/:6.0.8] {re:classloading}
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at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.SubscribeEventListener.invoke(SubscribeEventListener.java:50) ~[bus-8.0.5.jar%23152!/:?] {}
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at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:360) ~[bus-8.0.5.jar%23152!/:?] {}
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at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:328) ~[bus-8.0.5.jar%23152!/:?] {}
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at TRANSFORMER/neoforge@21.1.216/net.neoforged.neoforge.common.CommonHooks.onInteractEntity(CommonHooks.java:799) ~[neoforge-21.1.216-universal.jar%23179!/:?] {re:classloading}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.world.entity.player.Player.interactOn(Player.java:1058) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:create.mixins.json:PlayerMixin from mod create,pl:mixin:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.multiplayer.MultiPlayerGameMode.interact(MultiPlayerGameMode.java:424) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:classloading,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.startUseItem(Minecraft.java:1730) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.handleKeybinds(Minecraft.java:2023) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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-- Uptime --
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Details:
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JVM uptime: 84.528s
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Wall uptime: 59.931s
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High-res time: 65.268s
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Client ticks: 1075 ticks / 53.750s
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Stacktrace:
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.fillReport(Minecraft.java:2394) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.emergencySaveAndCrash(Minecraft.java:868) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.run(Minecraft.java:828) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:A,pl:runtimedistcleaner:A}
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at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.main.Main.main(Main.java:230) ~[client-1.21.1-20240808.144430-srg.jar%23178!/:?] {re:classloading,pl:runtimedistcleaner:A}
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at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
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at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:136) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:124) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonClientLaunchHandler.runService(CommonClientLaunchHandler.java:32) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/fml_loader@4.0.42/net.neoforged.fml.loading.targets.CommonLaunchHandler.lambda$launchService$4(CommonLaunchHandler.java:118) ~[loader-4.0.42.jar%23149!/:4.0] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.Launcher.run(Launcher.java:103) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.Launcher.main(Launcher.java:74) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-11.0.5.jar%23154!/:?] {}
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at MC-BOOTSTRAP/cpw.mods.modlauncher@11.0.5/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-11.0.5.jar%23154!/:?] {}
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at cpw.mods.bootstraplauncher@2.0.2/cpw.mods.bootstraplauncher.BootstrapLauncher.run(BootstrapLauncher.java:210) [bootstraplauncher-2.0.2.jar:?] {}
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at cpw.mods.bootstraplauncher@2.0.2/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:69) [bootstraplauncher-2.0.2.jar:?] {}
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at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
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at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
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at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67) [ForgeWrapper-prism-2025-10-07.jar:prism-2025-10-07] {}
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at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) [NewLaunch.jar:?] {}
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at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?] {}
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at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?] {}
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-- Affected level --
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Details:
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All players: 1 total; [LocalPlayer['SystemNeoSpl'/1, l='ClientLevel', x=10.14, y=-60.00, z=2.88]]
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Chunk stats: 961, 609
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Level dimension: minecraft:overworld
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Level spawn location: World: (0,-60,0), Section: (at 0,4,0 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)
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Level time: 699 game time, 699 day time
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Server brand: neoforge
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Server type: Integrated singleplayer server
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Tracked entity count: 92
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-- Last reload --
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Details:
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Reload number: 1
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Reload reason: initial
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Finished: Yes
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Packs: vanilla, mod_resources, mod/flywheel, mod/ponder, mod/create, mod/neoforge, mod/railcraft
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-- System Details --
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Details:
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Minecraft Version: 1.21.1
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Minecraft Version ID: 1.21.1
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Operating System: Linux (amd64) version 6.17.9-zen1-1-zen
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Java Version: 21.0.9, Arch Linux
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Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Arch Linux
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Memory: 1356241808 bytes (1293 MiB) / 2298478592 bytes (2192 MiB) up to 25769803776 bytes (24576 MiB)
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CPUs: 24
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Processor Vendor: AuthenticAMD
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Processor Name: AMD Ryzen 9 3900X 12-Core Processor
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Identifier: AuthenticAMD Family 23 Model 113 Stepping 0
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Microarchitecture: Zen 2
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Frequency (GHz): 4.67
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Number of physical packages: 1
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Number of physical CPUs: 12
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Number of logical CPUs: 24
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Graphics card #0 name: Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT]
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Graphics card #0 vendor: Advanced Micro Devices, Inc. [AMD/ATI] (0x1002)
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Graphics card #0 VRAM (MiB): 258.00
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Graphics card #0 deviceId: 0x731f
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Graphics card #0 versionInfo: unknown
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Virtual memory max (MiB): 48753.88
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Virtual memory used (MiB): 8041.56
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Swap memory total (MiB): 32768.00
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Swap memory used (MiB): 0.00
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Space in storage for jna.tmpdir (MiB): <path not set>
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Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): <path not set>
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Space in storage for io.netty.native.workdir (MiB): <path not set>
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Space in storage for java.io.tmpdir (MiB): available: 15924.04, total: 15985.88
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Space in storage for workdir (MiB): available: 199813.80, total: 469953.00
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JVM Flags: 2 total; -Xms512m -Xmx24576m
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Launched Version: 1.21.1
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Launcher name: PrismLauncher
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Backend library: LWJGL version 3.3.3+5
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Backend API: AMD Radeon RX 5700 XT (radeonsi, navi10, LLVM 21.1.5, DRM 3.64, 6.17.9-zen1-1-zen) GL version 4.6 (Core Profile) Mesa 25.2.7-arch1.1, AMD
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Window size: 1920x1032
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GFLW Platform: x11
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GL Caps: Using framebuffer using OpenGL 3.2
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GL debug messages:
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Is Modded: Definitely; Client brand changed to 'neoforge'; Server brand changed to 'neoforge'
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Universe: 400921fb54442d18
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Type: Integrated Server (map_client.txt)
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Graphics mode: fancy
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Render Distance: 12/12 chunks
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Resource Packs: vanilla, mod_resources, mod/flywheel, mod/ponder (incompatible), mod/create (incompatible), mod/neoforge, mod/railcraft
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Current Language: en_us
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Locale: en_US
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System encoding: UTF-8
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File encoding: UTF-8
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CPU: 24x AMD Ryzen 9 3900X 12-Core Processor
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Server Running: true
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Player Count: 1 / 8; [ServerPlayer['SystemNeoSpl'/1, l='ServerLevel[New World]', x=10.14, y=-60.00, z=2.88]]
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Active Data Packs: create:dynamic_data, vanilla, mod_data, mod/flywheel (incompatible), mod/ponder (incompatible), mod/create (incompatible), mod/neoforge, mod/railcraft
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Available Data Packs: bundle, trade_rebalance, vanilla, mod/create (incompatible), mod/flywheel (incompatible), mod/neoforge, mod/ponder (incompatible), mod/railcraft, mod_data, create:dynamic_data
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Enabled Feature Flags: minecraft:vanilla
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World Generation: Stable
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World Seed: 9090994524936231736
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ModLauncher: 11.0.5+main.901c6ea8
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ModLauncher launch target: forgeclient
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ModLauncher services:
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sponge-mixin-0.15.2+mixin.0.8.7.jar mixin PLUGINSERVICE
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loader-4.0.42.jar slf4jfixer PLUGINSERVICE
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loader-4.0.42.jar runtime_enum_extender PLUGINSERVICE
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at-modlauncher-10.0.1.jar accesstransformer PLUGINSERVICE
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loader-4.0.42.jar runtimedistcleaner PLUGINSERVICE
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modlauncher-11.0.5.jar mixin TRANSFORMATIONSERVICE
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modlauncher-11.0.5.jar fml TRANSFORMATIONSERVICE
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FML Language Providers:
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javafml@4.0
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lowcodefml@4.0
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minecraft@4.0
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Mod List:
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create-1.21.1-6.0.8.jar |Create |create |6.0.8 |Manifest: NOSIGNATURE
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flywheel-neoforge-1.21.1-1.0.5.jar |Flywheel |flywheel |1.0.5 |Manifest: NOSIGNATURE
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client-1.21.1-20240808.144430-srg.jar |Minecraft |minecraft |1.21.1 |Manifest: ****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****:****
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neoforge-21.1.216-universal.jar |NeoForge |neoforge |21.1.216 |Manifest: NOSIGNATURE
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Ponder-NeoForge-1.21.1-1.0.64.jar |Ponder |ponder |1.0.64 |Manifest: NOSIGNATURE
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railcraft-reborn-1.21.1-1.2.9.jar |Railcraft Reborn |railcraft |1.2.9 |Manifest: NOSIGNATURE
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Crash Report UUID: 69f8edbb-ad2b-4680-b1bd-cc2b332f52ac
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FML: 4.0.42
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NeoForge: 21.1.216
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Flywheel Backend: flywheel:indirect
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