Game crashes the moment I enter the world. Potentially because of the wondering trader.

[Ozzso]

Minecraft Version

Minecraft 1.20.1

Oculus Version

oculus-mc1.20.1-1.8.0.jar

Rubidium / Embeddium Version

No response

Operating System

Windows 10

What is your GPU?

AMD Radeon RX 6500 XT

Java Version

Java 21

Reproduction Steps

1. Game boots-up
2. Enter world
3. Game crash's after wandering trader spawns in.

crash-2026-01-02_13.41.19-client.txt

Crash Report file and latest.log

---- Minecraft Crash Report ----

// Hi. I'm Connector, and I'm a crashaholic
=========================
SINYTRA CONNECTOR IS PRESENT!
Please verify issues are not caused by Connector before reporting them to mod authors.
If you're unsure, file a report on Connector's issue tracker found at https://github.com/Sinytra/Connector/issues.
=========================

// My bad.

Time: 2026-01-02 13:41:19
Description: Rendering entity in world

java.lang.NoClassDefFoundError: net/caffeinemc/mods/sodium/api/memory/MemoryIntrinsics
	at com.mojang.blaze3d.vertex.BufferBuilder.duplicateLastVertex(BufferBuilder.java:3073) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.oculus.vertexformat.json:block_rendering.MixinBufferBuilder_SeparateAo from mod oculus,pl:mixin:APP:entity_texture_features.mixins.json:MixinBufferBuilder from mod entity_texture_features,pl:mixin:APP:mixins.oculus.vertexformat.json:MixinBufferBuilder from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinBufferBuilder from mod oculus,pl:mixin:APP:immediatelyfast-common.mixins.json:core.MixinBufferBuilder from mod immediatelyfast,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinBufferBuilder_SegmentRendering from mod oculus,pl:mixin:APP:modernfix-common.mixins.json:bugfix.buffer_builder_leak.BufferBuilderMixin from mod modernfix,pl:mixin:A,pl:runtimedistcleaner:A}
	at com.mojang.blaze3d.vertex.BufferBuilder.splitStrip(BufferBuilder.java:3067) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.oculus.vertexformat.json:block_rendering.MixinBufferBuilder_SeparateAo from mod oculus,pl:mixin:APP:entity_texture_features.mixins.json:MixinBufferBuilder from mod entity_texture_features,pl:mixin:APP:mixins.oculus.vertexformat.json:MixinBufferBuilder from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinBufferBuilder from mod oculus,pl:mixin:APP:immediatelyfast-common.mixins.json:core.MixinBufferBuilder from mod immediatelyfast,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinBufferBuilder_SegmentRendering from mod oculus,pl:mixin:APP:modernfix-common.mixins.json:bugfix.buffer_builder_leak.BufferBuilderMixin from mod modernfix,pl:mixin:A,pl:runtimedistcleaner:A}
	at net.irisshaders.batchedentityrendering.impl.SegmentedBufferBuilder.m_6299_(SegmentedBufferBuilder.java:52) ~[oculus-mc1.20.1-1.8.0.jar%23210!/:?] {re:classloading}
	at net.irisshaders.batchedentityrendering.impl.FullyBufferedMultiBufferSource.m_6299_(FullyBufferedMultiBufferSource.java:91) ~[oculus-mc1.20.1-1.8.0.jar%23210!/:?] {re:mixin,re:classloading}
	at net.minecraft.client.renderer.entity.EntityRenderDispatcher.md4a1f17$oculus$lambda$iris$beginEntityRender$0$0(EntityRenderDispatcher.java:3057) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:playerAnimator-common.mixins.json:firstPerson.EntityRenderDispatcherMixin from mod playeranimator,pl:mixin:APP:firstperson.mixins.json:RenderDispatcherMixin from mod firstperson,pl:mixin:APP:entity_model_features.mixins.json:rendering.MixinEntityRenderDispatcher from mod entity_model_features,pl:mixin:APP:entity_texture_features.mixins.json:entity.misc.MixinEntityRenderDispatcher from mod entity_texture_features,pl:mixin:APP:mixins.oculus.json:MixinEntityRenderDispatcher from mod oculus,pl:mixin:APP:mixins.oculus.json:entity_render_context.MixinEntityRenderDispatcher from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.entity.MobRenderer.m_115461_(MobRenderer.java:77) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:classloading,pl:connector_pre_launch:A,re:mixin,pl:connector_pre_launch:A}
	at net.minecraft.client.renderer.entity.MobRenderer.m_7392_(MobRenderer.java:52) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:classloading,pl:connector_pre_launch:A,re:mixin,pl:connector_pre_launch:A}
	at net.minecraft.client.renderer.entity.MobRenderer.m_7392_(MobRenderer.java:18) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:classloading,pl:connector_pre_launch:A,re:mixin,pl:connector_pre_launch:A}
	at net.minecraft.client.renderer.entity.EntityRenderDispatcher.m_114384_(EntityRenderDispatcher.java:140) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:playerAnimator-common.mixins.json:firstPerson.EntityRenderDispatcherMixin from mod playeranimator,pl:mixin:APP:firstperson.mixins.json:RenderDispatcherMixin from mod firstperson,pl:mixin:APP:entity_model_features.mixins.json:rendering.MixinEntityRenderDispatcher from mod entity_model_features,pl:mixin:APP:entity_texture_features.mixins.json:entity.misc.MixinEntityRenderDispatcher from mod entity_texture_features,pl:mixin:APP:mixins.oculus.json:MixinEntityRenderDispatcher from mod oculus,pl:mixin:APP:mixins.oculus.json:entity_render_context.MixinEntityRenderDispatcher from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.LevelRenderer.m_109517_(LevelRenderer.java:1440) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:subtle_effects.mixins.json:client.LevelRendererMixin from mod subtle_effects,pl:mixin:APP:mixins.oculus.vertexformat.json:immediate.MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer_EntityListSorting from mod oculus,pl:mixin:APP:playerAnimator-common.mixins.json:firstPerson.LevelRendererMixin from mod playeranimator,pl:mixin:APP:firstperson.mixins.json:WorldRendererMixin from mod firstperson,pl:mixin:APP:fabric-resource-loader-v0.client.mixins.json:KeyedResourceReloadListenerClientMixin from mod fabric_resource_loader_v0,pl:mixin:APP:fabric-rendering-v1.mixins.json:WorldRendererMixin from mod fabric_rendering_v1,pl:mixin:APP:notenoughanimations.mixins.json:LevelRendererMixin from mod notenoughanimations,pl:mixin:APP:mixins.oculus.json:LevelRendererAccessor from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:fabulous.MixinDisableFabulousGraphics from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:sky.MixinLevelRenderer_SunMoonToggle from mod oculus,pl:mixin:APP:mixins.oculus.fantastic.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinPreventRebuildNearInShadowPass from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.LevelRenderer.invokeRenderEntity(LevelRenderer.java) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:subtle_effects.mixins.json:client.LevelRendererMixin from mod subtle_effects,pl:mixin:APP:mixins.oculus.vertexformat.json:immediate.MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer_EntityListSorting from mod oculus,pl:mixin:APP:playerAnimator-common.mixins.json:firstPerson.LevelRendererMixin from mod playeranimator,pl:mixin:APP:firstperson.mixins.json:WorldRendererMixin from mod firstperson,pl:mixin:APP:fabric-resource-loader-v0.client.mixins.json:KeyedResourceReloadListenerClientMixin from mod fabric_resource_loader_v0,pl:mixin:APP:fabric-rendering-v1.mixins.json:WorldRendererMixin from mod fabric_rendering_v1,pl:mixin:APP:notenoughanimations.mixins.json:LevelRendererMixin from mod notenoughanimations,pl:mixin:APP:mixins.oculus.json:LevelRendererAccessor from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:fabulous.MixinDisableFabulousGraphics from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:sky.MixinLevelRenderer_SunMoonToggle from mod oculus,pl:mixin:APP:mixins.oculus.fantastic.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinPreventRebuildNearInShadowPass from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.irisshaders.iris.shadows.ShadowRenderer.renderEntities(ShadowRenderer.java:635) ~[oculus-mc1.20.1-1.8.0.jar%23210!/:?] {re:mixin,re:classloading}
	at net.irisshaders.iris.shadows.ShadowRenderer.renderShadows(ShadowRenderer.java:504) ~[oculus-mc1.20.1-1.8.0.jar%23210!/:?] {re:mixin,re:classloading}
	at net.irisshaders.iris.pipeline.IrisRenderingPipeline.renderShadows(IrisRenderingPipeline.java:1012) ~[oculus-mc1.20.1-1.8.0.jar%23210!/:?] {re:classloading}
	at net.minecraft.client.renderer.LevelRenderer.handler$bjm000$oculus$iris$renderTerrainShadows(LevelRenderer.java:8196) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:subtle_effects.mixins.json:client.LevelRendererMixin from mod subtle_effects,pl:mixin:APP:mixins.oculus.vertexformat.json:immediate.MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer_EntityListSorting from mod oculus,pl:mixin:APP:playerAnimator-common.mixins.json:firstPerson.LevelRendererMixin from mod playeranimator,pl:mixin:APP:firstperson.mixins.json:WorldRendererMixin from mod firstperson,pl:mixin:APP:fabric-resource-loader-v0.client.mixins.json:KeyedResourceReloadListenerClientMixin from mod fabric_resource_loader_v0,pl:mixin:APP:fabric-rendering-v1.mixins.json:WorldRendererMixin from mod fabric_rendering_v1,pl:mixin:APP:notenoughanimations.mixins.json:LevelRendererMixin from mod notenoughanimations,pl:mixin:APP:mixins.oculus.json:LevelRendererAccessor from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:fabulous.MixinDisableFabulousGraphics from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:sky.MixinLevelRenderer_SunMoonToggle from mod oculus,pl:mixin:APP:mixins.oculus.fantastic.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinPreventRebuildNearInShadowPass from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.LevelRenderer.m_109599_(LevelRenderer.java:1155) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:subtle_effects.mixins.json:client.LevelRendererMixin from mod subtle_effects,pl:mixin:APP:mixins.oculus.vertexformat.json:immediate.MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer_EntityListSorting from mod oculus,pl:mixin:APP:playerAnimator-common.mixins.json:firstPerson.LevelRendererMixin from mod playeranimator,pl:mixin:APP:firstperson.mixins.json:WorldRendererMixin from mod firstperson,pl:mixin:APP:fabric-resource-loader-v0.client.mixins.json:KeyedResourceReloadListenerClientMixin from mod fabric_resource_loader_v0,pl:mixin:APP:fabric-rendering-v1.mixins.json:WorldRendererMixin from mod fabric_rendering_v1,pl:mixin:APP:notenoughanimations.mixins.json:LevelRendererMixin from mod notenoughanimations,pl:mixin:APP:mixins.oculus.json:LevelRendererAccessor from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:fabulous.MixinDisableFabulousGraphics from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:sky.MixinLevelRenderer_SunMoonToggle from mod oculus,pl:mixin:APP:mixins.oculus.fantastic.json:MixinLevelRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:shadows.MixinPreventRebuildNearInShadowPass from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.m_109089_(GameRenderer.java:1126) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:subtle_effects.mixins.json:client.GameRendererAccessor from mod subtle_effects,pl:mixin:APP:subtle_effects.mixins.json:client.GameRendererMixin from mod subtle_effects,pl:mixin:APP:entity_model_features.mixins.json:MixinGameRenderer from mod entity_model_features,pl:mixin:APP:entity_model_features.mixins.json:accessor.Mixin_GuiEntityTester from mod entity_model_features,pl:mixin:APP:mixins.oculus.json:GameRendererAccessor from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinGameRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinModelViewBobbing from mod oculus,pl:mixin:APP:immediatelyfast-common.mixins.json:core.compat.MixinGameRenderer from mod immediatelyfast,pl:mixin:APP:mixins.oculus.json:MixinGameRenderer_NightVisionCompat from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:909) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:subtle_effects.mixins.json:client.GameRendererAccessor from mod subtle_effects,pl:mixin:APP:subtle_effects.mixins.json:client.GameRendererMixin from mod subtle_effects,pl:mixin:APP:entity_model_features.mixins.json:MixinGameRenderer from mod entity_model_features,pl:mixin:APP:entity_model_features.mixins.json:accessor.Mixin_GuiEntityTester from mod entity_model_features,pl:mixin:APP:mixins.oculus.json:GameRendererAccessor from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinGameRenderer from mod oculus,pl:mixin:APP:mixins.oculus.json:MixinModelViewBobbing from mod oculus,pl:mixin:APP:immediatelyfast-common.mixins.json:core.compat.MixinGameRenderer from mod immediatelyfast,pl:mixin:APP:mixins.oculus.json:MixinGameRenderer_NightVisionCompat from mod oculus,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23218!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:218) ~[1.20.1-47.4.13.jar:?] {re:classloading,pl:connector_pre_launch:A,pl:runtimedistcleaner:A}
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] {}
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] {re:mixin}
	at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.4.13.jar:?] {}
	at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.4.13.jar:?] {}
	at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.4.13.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] {}
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] {re:mixin}
	at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:63) ~[theseus.jar%2386!/:?] {}
	at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28) ~[theseus.jar%2386!/:?] {}
Caused by: java.lang.ClassNotFoundException: net.caffeinemc.mods.sodium.api.memory.MemoryIntrinsics
	at jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source) ~[?:?] {}
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] {}
	at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:137) ~[securejarhandler-2.1.10.jar:?] {}
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] {}
	at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:137) ~[securejarhandler-2.1.10.jar:?] {}
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] {}
	... 42 more

Additional context

No response

[SHARK-ENIGMA]

Same issue happening here. I suppose for now lets just turn off the wandering trader, see if that does anything. Not like it had many useful trades anyway.

[Ozzso]

Wait you can turn off entities in minecraft? How??

[SHARK-ENIGMA]

Wait you can turn off entities in minecraft? How??

It's considered an "experimental" feature now, but when you're creating a world, it should be under game rules. You can also turn off phantoms, which is what I usually do, since they're useless and annoying.
Just explore the world creation menu, you'll find it.