---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 2024-11-24 17:01:07
Description: Unexpected error

java.lang.ClassCastException: class com.simibubi.create.content.contraptions.render.ContraptionRenderDispatcher$1 cannot be cast to class net.minecraft.class_638 (com.simibubi.create.content.contraptions.render.ContraptionRenderDispatcher$1 and net.minecraft.class_638 are in unnamed module of loader 'knot' @56620197)
at knot//ca.spottedleaf.starlight.common.light.StarLightEngine.causeSnowLightUpdate(StarLightEngine.java:1666)
at knot//ca.spottedleaf.starlight.common.light.StarLightEngine.handler$ejd000$physicsmod$setLightLevel(StarLightEngine.java:1655)
at knot//ca.spottedleaf.starlight.common.light.StarLightEngine.setLightLevel(StarLightEngine.java)
at knot//ca.spottedleaf.starlight.common.light.BlockStarLightEngine.checkBlock(BlockStarLightEngine.java:100)
at knot//ca.spottedleaf.starlight.common.light.BlockStarLightEngine.propagateBlockChanges(BlockStarLightEngine.java:200)
at knot//ca.spottedleaf.starlight.common.light.StarLightEngine.blocksChangedInChunk(StarLightEngine.java:428)
at knot//ca.spottedleaf.starlight.common.light.StarLightInterface.propagateChanges(StarLightInterface.java:552)
at knot//net.minecraft.class_3568.method_15516(class_3568.java:1599)
at knot//com.jozufozu.flywheel.core.virtual.VirtualRenderWorld.runLightEngine(VirtualRenderWorld.java:136)
at knot//com.simibubi.create.content.contraptions.render.ContraptionRenderDispatcher.setupRenderWorld(ContraptionRenderDispatcher.java:130)
at knot//com.simibubi.create.content.contraptions.render.FlwContraptionManager.create(FlwContraptionManager.java:84)
at knot//com.simibubi.create.content.contraptions.render.FlwContraptionManager.create(FlwContraptionManager.java:22)
at knot//com.simibubi.create.content.contraptions.render.ContraptionRenderingWorld.getRenderInfo(ContraptionRenderingWorld.java:95)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
at java.base/java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1787)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
at knot//com.simibubi.create.content.contraptions.render.ContraptionRenderingWorld.tick(ContraptionRenderingWorld.java:68)
at knot//com.simibubi.create.content.contraptions.render.FlwContraptionManager.tick(FlwContraptionManager.java:30)
at knot//com.simibubi.create.content.contraptions.render.ContraptionRenderDispatcher.tick(ContraptionRenderDispatcher.java:65)
at knot//com.simibubi.create.foundation.events.ClientEvents.onTick(ClientEvents.java:191)
at knot//net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents.lambda$static$2(ClientTickEvents.java:43)
at knot//net.minecraft.class_310.handler$bpg000$fabric-lifecycle-events-v1$onEndTick(class_310.java:11022)
at knot//net.minecraft.class_310.method_1574(class_310.java:1957)
at knot//net.minecraft.class_310.method_1523(class_310.java:1181)
at knot//net.minecraft.class_310.method_1514(class_310.java:802)
at knot//net.minecraft.client.main.Main.main(Main.java:250)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480)
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.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at oolloo.jlw.Wrapper.invokeMain(Wrapper.java:110)
at oolloo.jlw.Wrapper.main(Wrapper.java:103)

irisflw isn't mentioned at all here.

You've got Starlight which isn't compatible with Create. Starlight isn't necessary on 1.20 and above.

And for future reference, share the whole crash report, not just a snippet.