[1.19.2 Fabric] Unable to join single player / server worlds

[itsdinkd]

Since updating from Packet Fixer 1.4.2, whenever a player joins a single player world, or a server, there is a non valid character error that appears and disconnects the player.

I tried almost every version after 1.4.2 for 1.19.2 fabric, and its getting this error. It seems to start on 1.4.3, so below are the logs on 1.4.3, but again, i've tried 2.0, and 3.x, and all have the same encountered issue.

Due to the invalid unix codes in the error, i'm unable to paste, which is why the second line looks so weird.
It looks like this though.

Full log (note invalid characters not present in log due to windows not allowing to paste content, see screenshot above for characters)
https://mclo.gs/iOIK4ne

[10:39:48] [Netty Local Client IO #0/ERROR]: Encountered exception while handling in channel with name "apoli:power_list"
net.minecraft.class_151: Non [a-z0-9_.-] character in namespace of location 	apoli:and apoli:equipped_item_action apoli:consume apoli:heal@? apoli:play_sound�minecraft:block.anvil.use??
	at net.minecraft.class_2960.<init>(class_2960.java:38) ~[client-intermediary.jar:?]
	at net.minecraft.class_2960.<init>(class_2960.java:46) ~[client-intermediary.jar:?]
	at net.minecraft.class_2540.method_10810(class_2540.java:634) ~[client-intermediary.jar:?]
	at io.github.apace100.apoli.networking.ModPacketsS2C.receivePowerList(ModPacketsS2C.java:121) ~[apoli-2.6.1-b666438ef8105be6.jar:?]
	at net.fabricmc.fabric.impl.networking.client.ClientPlayNetworkAddon.receive(ClientPlayNetworkAddon.java:106) ~[fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.fabricmc.fabric.impl.networking.client.ClientPlayNetworkAddon.receive(ClientPlayNetworkAddon.java:42) ~[fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.fabricmc.fabric.impl.networking.AbstractChanneledNetworkAddon.handle(AbstractChanneledNetworkAddon.java:101) [fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.fabricmc.fabric.impl.networking.client.ClientPlayNetworkAddon.handle(ClientPlayNetworkAddon.java:98) [fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.minecraft.class_634.handler$fnd000$fabric-networking-api-v1$handleCustomPayload(class_634.java:3022) [client-intermediary.jar:?]
	at net.minecraft.class_634.method_11152(class_634.java) [client-intermediary.jar:?]
	at net.minecraft.class_2658.method_11457(class_2658.java:60) [client-intermediary.jar:?]
	at net.minecraft.class_2658.method_11054(class_2658.java:8) [client-intermediary.jar:?]
	at net.minecraft.class_2535.method_10759(class_2535.java:167) [client-intermediary.jar:?]
	at net.minecraft.class_2535.method_10770(class_2535.java:152) [client-intermediary.jar:?]
	at net.minecraft.class_2535.channelRead0(class_2535.java:50) [client-intermediary.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel.readInbound(LocalChannel.java:299) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel.finishPeerRead0(LocalChannel.java:445) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel.access$400(LocalChannel.java:50) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel$5.run(LocalChannel.java:403) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) [netty-common-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995) [netty-common-4.1.77.Final.jar:?]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.77.Final.jar:?]
	at java.lang.Thread.run(Thread.java:840) [?:?]
[10:39:48] [Netty Local Client IO #0/ERROR]: Encountered exception while handling in channel with name "apoli:power_list"
net.minecraft.class_151: Non [a-z0-9_.-] character in namespace of location 	apoli:and apoli:equipped_item_action apoli:consume apoli:heal@? apoli:play_sound�minecraft:block.anvil.use??
	at net.minecraft.class_2960.<init>(class_2960.java:38) ~[client-intermediary.jar:?]
	at net.minecraft.class_2960.<init>(class_2960.java:46) ~[client-intermediary.jar:?]
	at net.minecraft.class_2540.method_10810(class_2540.java:634) ~[client-intermediary.jar:?]
	at io.github.apace100.apoli.networking.ModPacketsS2C.receivePowerList(ModPacketsS2C.java:121) ~[apoli-2.6.1-b666438ef8105be6.jar:?]
	at net.fabricmc.fabric.impl.networking.client.ClientPlayNetworkAddon.receive(ClientPlayNetworkAddon.java:106) ~[fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.fabricmc.fabric.impl.networking.client.ClientPlayNetworkAddon.receive(ClientPlayNetworkAddon.java:42) ~[fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.fabricmc.fabric.impl.networking.AbstractChanneledNetworkAddon.handle(AbstractChanneledNetworkAddon.java:101) ~[fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.fabricmc.fabric.impl.networking.client.ClientPlayNetworkAddon.handle(ClientPlayNetworkAddon.java:98) ~[fabric-networking-api-v1-1.2.12+def3f86d90-79c6c1b478adf57f.jar:?]
	at net.minecraft.class_634.handler$fnd000$fabric-networking-api-v1$handleCustomPayload(class_634.java:3022) ~[client-intermediary.jar:?]
	at net.minecraft.class_634.method_11152(class_634.java) ~[client-intermediary.jar:?]
	at net.minecraft.class_2658.method_11457(class_2658.java:60) ~[client-intermediary.jar:?]
	at net.minecraft.class_2658.method_11054(class_2658.java:8) ~[client-intermediary.jar:?]
	at net.minecraft.class_2535.method_10759(class_2535.java:167) ~[client-intermediary.jar:?]
	at net.minecraft.class_2535.method_10770(class_2535.java:152) ~[client-intermediary.jar:?]
	at net.minecraft.class_2535.channelRead0(class_2535.java:50) ~[client-intermediary.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) ~[netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel.readInbound(LocalChannel.java:299) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel.finishPeerRead0(LocalChannel.java:445) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel.access$400(LocalChannel.java:50) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.local.LocalChannel$5.run(LocalChannel.java:403) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) [netty-common-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995) [netty-common-4.1.77.Final.jar:?]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.77.Final.jar:?]
	at java.lang.Thread.run(Thread.java:840) [?:?]
[10:39:48] [Netty Server IO #1/ERROR]: Exception occurred in netty pipeline
java.nio.channels.ClosedChannelException: null
	at io.netty.channel.local.LocalChannel.doWrite(LocalChannel.java:368) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:931) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.flush(AbstractChannel.java:895) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.flush(DefaultChannelPipeline.java:1372) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:750) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:765) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext$WriteTask.run(AbstractChannelHandlerContext.java:1071) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) [netty-common-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) [netty-common-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) [netty-common-4.1.77.Final.jar:?]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503) [netty-transport-4.1.77.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995) [netty-common-4.1.77.Final.jar:?]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.77.Final.jar:?]
	at java.lang.Thread.run(Thread.java:840) [?:?]

[TonimatasDEV]

Packet Fixer doesn't fix this problem. I'm sure that is fixed by another mod

[itsdinkd]

I see, however, when I'm using 1.4.2, this error doesn't happen. It's only after updating to a newer version of packet fixer this error comes into play. Not really saying that packet fixer will fix this issue, im saying it's being caused when I update packet fixer

[TonimatasDEV]

I see, however, when I'm using 1.4.2, this error doesn't happen. It's only after updating to a newer version of packet fixer this error comes into play. Not really saying that packet fixer will fix this issue, im saying it's being caused when I update packet fixer

Packet Fixer only increase the packet sizes, I don't know why these versions works different for you.

[itsdinkd]

Yeah.. not sure why either but figured I'd let you know.

…

On Wed, Oct 1, 2025, 10:13 AM TonimatasDEV ***@***.***> wrote: *TonimatasDEV* left a comment (TonimatasDEV/PacketFixer#82) <#82 (comment)> I see, however, when I'm using 1.4.2, this error doesn't happen. It's only after updating to a newer version of packet fixer this error comes into play. Not really saying that packet fixer will fix this issue, im saying it's being caused when I update packet fixer Packet Fixer only increase the packet sizes, I don't know why these versions works different for you. — Reply to this email directly, view it on GitHub <#82 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIL5CKB5ESFKFPJ747CZFHL3VQDR5AVCNFSM6AAAAACFRMHI6CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGNJXGMZTENZWGI> . You are receiving this because you authored the thread.Message ID: ***@***.***>