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Frequent crashing issue

Open twothe opened this issue 5 months ago • 2 comments

Weather2 (MC 1.21.1 on NeoForge) seems to cause frequent crashing issues with ConcurrentModificationExceptions:

[07Aug2025 04:28:25.461] [Netty Server IO #1/ERROR] [net.minecraft.network.PacketEncoder/]: Error sending packet clientbound/minecraft:custom_payload
io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecraft:custom_payload'
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:55) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:14) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:24) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:12) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at MC-BOOTSTRAP/[email protected]/io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.97.Final.jar%23156!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.97.Final.jar%23156!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.97.Final.jar%23156!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.ChannelOutboundHandlerAdapter.write(ChannelOutboundHandlerAdapter.java:113) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection$2.write(Connection.java:528) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.doSendPacket$mixinextras$wrapped$80(Connection.java:364) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.mixinextras$bridge$doSendPacket$mixinextras$wrapped$80$81(Connection.java) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.wrapMethod$zfe000$modernfix$checkClientPresence(Connection.java:750) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.doSendPacket(Connection.java) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.lambda$sendPacket$12(Connection.java:359) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
Caused by: java.lang.RuntimeException: Failed encoding custom payload weather2:nbt_client: java.util.ConcurrentModificationException
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.writeCap(CustomPacketPayload.java:42) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:47) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:29) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$4.encode(StreamCodec.java:81) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:97) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:87) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:53) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	... 39 more
Caused by: java.util.ConcurrentModificationException
	at java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1605) ~[?:?]
	at java.base/java.util.HashMap$KeyIterator.next(HashMap.java:1628) ~[?:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.CompoundTag.write(CompoundTag.java:190) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.CompoundTag.writeNamedTag(CompoundTag.java:518) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.CompoundTag.write(CompoundTag.java:192) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.NbtIo.writeAnyTag(NbtIo.java:163) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.FriendlyByteBuf.writeNbt(FriendlyByteBuf.java:513) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.ByteBufCodecs$18.encode(ByteBufCodecs.java:257) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.ByteBufCodecs$18.encode(ByteBufCodecs.java:243) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$4.encode(StreamCodec.java:81) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$7.encode(StreamCodec.java:136) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.writeCap(CustomPacketPayload.java:40) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:47) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:29) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$4.encode(StreamCodec.java:81) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:97) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:87) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:53) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	... 39 more
[07Aug2025 04:28:25.471] [Netty Server IO #1/ERROR] [net.minecraft.network.Connection/]: Exception caught in connection
io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecraft:custom_payload'
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:55) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:14) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:24) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:12) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at MC-BOOTSTRAP/[email protected]/io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.97.Final.jar%23156!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.97.Final.jar%23156!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.97.Final.jar%23156!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.ChannelOutboundHandlerAdapter.write(ChannelOutboundHandlerAdapter.java:113) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection$2.write(Connection.java:528) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.doSendPacket$mixinextras$wrapped$80(Connection.java:364) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.mixinextras$bridge$doSendPacket$mixinextras$wrapped$80$81(Connection.java) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.wrapMethod$zfe000$modernfix$checkClientPresence(Connection.java:750) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.doSendPacket(Connection.java) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.Connection.lambda$sendPacket$12(Connection.java:359) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) ~[netty-transport-4.1.97.Final.jar%23162!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at MC-BOOTSTRAP/[email protected]/io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.97.Final.jar%23157!/:4.1.97.Final]
	at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
Caused by: java.lang.RuntimeException: Failed encoding custom payload weather2:nbt_client: java.util.ConcurrentModificationException
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.writeCap(CustomPacketPayload.java:42) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:47) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:29) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$4.encode(StreamCodec.java:81) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:97) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:87) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:53) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	... 39 more
Caused by: java.util.ConcurrentModificationException
	at java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1605) ~[?:?]
	at java.base/java.util.HashMap$KeyIterator.next(HashMap.java:1628) ~[?:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.CompoundTag.write(CompoundTag.java:190) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.CompoundTag.writeNamedTag(CompoundTag.java:518) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.CompoundTag.write(CompoundTag.java:192) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.nbt.NbtIo.writeAnyTag(NbtIo.java:163) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.FriendlyByteBuf.writeNbt(FriendlyByteBuf.java:513) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.ByteBufCodecs$18.encode(ByteBufCodecs.java:257) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.ByteBufCodecs$18.encode(ByteBufCodecs.java:243) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$4.encode(StreamCodec.java:81) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$7.encode(StreamCodec.java:136) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.writeCap(CustomPacketPayload.java:40) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:47) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.protocol.common.custom.CustomPacketPayload$1.encode(CustomPacketPayload.java:29) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$4.encode(StreamCodec.java:81) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:97) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:87) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	at TRANSFORMER/[email protected]/net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:53) ~[client-1.21.1-20240808.144430-srg.jar%23378!/:?]
	... 39 more

Disabling Weather2 immediately stops the issue from happening, however it also causes the weather to be boring again.

twothe avatar Aug 07 '25 13:08 twothe