Internal Exception crash 1.21.1 Fabric Loader

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---- Minecraft Network Protocol Error Report ----
// Please insert The Internet CD #4

Time: 2024-09-16 07:37:48
Description: Packet handling error

io.netty.handler.codec.EncoderException: Failed to encode packet 'serverbound/minecraft:custom_payload' (minecraft:register)
	at net.minecraft.class_9136.handler$zhk000$encode(class_9136.java:547)
	at net.minecraft.class_9136.method_56426(class_9136.java:55)
	at net.minecraft.class_9136.encode(class_9136.java:14)
	at net.minecraft.class_2545.method_10838(class_2545.java:26)
	at net.minecraft.class_2545.encode(class_2545.java:12)
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856)
	at io.netty.channel.ChannelOutboundHandlerAdapter.write(ChannelOutboundHandlerAdapter.java:113)
	at net.minecraft.class_2535$2.write(class_2535.java:530)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984)
	at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
	at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
	at net.minecraft.class_2535.method_36942(class_2535.java:350)
	at net.minecraft.class_2535.method_52917(class_2535.java:345)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174)
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.ClassCastException: class net.fabricmc.fabric.impl.networking.RegistrationPayload cannot be cast to class net.minecraft.class_8711 (net.fabricmc.fabric.impl.networking.RegistrationPayload and net.minecraft.class_8711 are in unnamed module of loader net.fabricmc.loader.impl.launch.knot.KnotClassLoader @6591f517)
	at net.minecraft.class_9139$6.encode(class_9139.java:42)
	at net.minecraft.class_8710$1.method_56489(class_8710.java:52)
	at net.minecraft.class_8710$1.method_56490(class_8710.java:57)
	at net.minecraft.class_8710$1.encode(class_8710.java:39)
	at net.minecraft.class_9139$8.encode(class_9139.java:81)
	at net.minecraft.class_9139$9.method_56442(class_9139.java:97)
	at net.minecraft.class_9139$9.encode(class_9139.java:87)
	at net.minecraft.class_9136.method_56426(class_9136.java:53)
	... 24 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Netty Local Client IO #0
Stacktrace:
	at net.minecraft.class_2547.method_55622(class_2547.java:33)

-- Connection --
Details:
	Protocol: play
	Flow: CLIENTBOUND
	Server type: <none>
	Server brand: fabric
Stacktrace:
	at net.minecraft.class_2547.method_55622(class_2547.java:33)
	at net.minecraft.class_2600.method_59803(class_2600.java:62)
	at net.minecraft.class_8673.method_60882(class_8673.java:136)
	at net.minecraft.class_8673.method_60881(class_8673.java:127)
	at net.minecraft.class_2535.exceptionCaught(class_2535.java:161)
	at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346)
	at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:325)
	at io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:317)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.exceptionCaught(DefaultChannelPipeline.java:1377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346)
	at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:325)
	at io.netty.channel.DefaultChannelPipeline.fireExceptionCaught(DefaultChannelPipeline.java:907)
	at io.netty.channel.ChannelFutureListener$3.operationComplete(ChannelFutureListener.java:69)
	at io.netty.channel.ChannelFutureListener$3.operationComplete(ChannelFutureListener.java:65)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:590)
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:557)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:492)
	at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:185)
	at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:95)
	at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:30)
	at net.minecraft.class_2535.method_36942(class_2535.java:364)
	at net.minecraft.class_2535.method_52917(class_2535.java:345)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174)
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.base/java.lang.Thread.run(Thread.java:1583)

-- System Details --
Details:
	Minecraft Version: 1.21
	Minecraft Version ID: 1.21
	Operating System: Windows 11 (amd64) version 10.0
	Java Version: 21.0.3, Microsoft
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
	Memory: 223486392 bytes (213 MiB) / 838860800 bytes (800 MiB) up to 2147483648 bytes (2048 MiB)
	CPUs: 16
	Processor Vendor: GenuineIntel
	Processor Name: 13th Gen Intel(R) Core(TM) i5-13400F
	Identifier: Intel64 Family 6 Model 191 Stepping 2
	Microarchitecture: unknown
	Frequency (GHz): 2.50
	Number of physical packages: 1
	Number of physical CPUs: 10
	Number of logical CPUs: 16
	Graphics card #0 name: NVIDIA GeForce RTX 4060
	Graphics card #0 vendor: NVIDIA
	Graphics card #0 VRAM (MiB): 8188.00
	Graphics card #0 deviceId: VideoController1
	Graphics card #0 versionInfo: 31.0.15.5222
	Memory slot #0 capacity (MiB): 16384.00
	Memory slot #0 clockSpeed (GHz): 3.20
	Memory slot #0 type: DDR4
	Memory slot #1 capacity (MiB): 16384.00
	Memory slot #1 clockSpeed (GHz): 3.20
	Memory slot #1 type: DDR4
	Virtual memory max (MiB): 37445.27
	Virtual memory used (MiB): 15829.37
	Swap memory total (MiB): 4864.00
	Swap memory used (MiB): 60.13
	Space in storage for jna.tmpdir (MiB): available: 524628.50, total: 952852.00
	Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): available: 524628.50, total: 952852.00
	Space in storage for io.netty.native.workdir (MiB): available: 524628.50, total: 952852.00
	Space in storage for java.io.tmpdir (MiB): available: 524628.50, total: 952852.00
	Space in storage for workdir (MiB): available: 524628.50, total: 952852.00
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M