issue when trying to have player join LAN game

[Frawgzee]

is this a possible issue or a compatibility issue with another mod?

[14:47:50] [Server thread/INFO] [quark-zeta/]: Dispatching ZConfigChanged to 51 listeners
[14:47:50] [Server thread/ERROR] [ne.mi.ne.si.IndexedMessageCodec/SIMPLENET]: Received invalid message org.violetmoon.zeta.network.message.C2SUpdateFlag on channel quark:main
[14:47:50] [Server thread/ERROR] [ne.mi.fm.ja.FMLModContainer/]: Exception caught during firing event: Exception while firing event org.violetmoon.zeta.event.load.ZConfigChanged@176ea5f6:
Index: 1
Listeners:
0: NORMAL
1: net.minecraftforge.eventbus.EventBus$$Lambda$5436/0x000002612cf01bf0@71f616bb
java.lang.RuntimeException: Exception while firing event org.violetmoon.zeta.event.load.ZConfigChanged@176ea5f6:
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zeta.event.bus.ZetaEventBus$Listeners.doFire(ZetaEventBus.java:229)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zeta.event.bus.ZetaEventBus.fire(ZetaEventBus.java:103)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zetaimplforge.config.ConfigEventDispatcher.handleConfigChange(ConfigEventDispatcher.java:31)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zetaimplforge.config.ConfigEventDispatcher.configChanged(ConfigEventDispatcher.java:20)
at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:260)
at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:252)
at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:315)
at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:296)
at LAYER PLUGIN/javafmllanguage@1.20.1-47.3.0/net.minecraftforge.fml.javafmlmod.FMLModContainer.lambda$new$0(FMLModContainer.java:44)
at LAYER PLUGIN/fmlcore@1.20.1-47.3.0/net.minecraftforge.fml.ModContainer.lambda$dispatchConfigEvent$8(ModContainer.java:170)
at java.base/java.util.Optional.ifPresent(Optional.java:178)
at LAYER PLUGIN/fmlcore@1.20.1-47.3.0/net.minecraftforge.fml.ModContainer.dispatchConfigEvent(ModContainer.java:170)
at LAYER PLUGIN/fmlcore@1.20.1-47.3.0/net.minecraftforge.fml.config.ModConfig.fireEvent(ModConfig.java:77)
at LAYER PLUGIN/fmlcore@1.20.1-47.3.0/net.minecraftforge.fml.config.ConfigTracker.openConfig(ConfigTracker.java:62)
at LAYER PLUGIN/fmlcore@1.20.1-47.3.0/net.minecraftforge.fml.config.ConfigTracker.lambda$loadConfigs$1(ConfigTracker.java:50)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at java.base/java.util.Collections$SynchronizedCollection.forEach(Collections.java:2131)
at LAYER PLUGIN/fmlcore@1.20.1-47.3.0/net.minecraftforge.fml.config.ConfigTracker.loadConfigs(ConfigTracker.java:50)
at TRANSFORMER/svmm@1.20.1-1.20.1-1.2.4.0/dev.tourmi.svmm.config.ClientConfigs.loadOrCreateClientConfig(ClientConfigs.java:25)
at TRANSFORMER/svmm@1.20.1-1.20.1-1.2.4.0/dev.tourmi.svmm.config.ClientConfigs.getClientConfig(ClientConfigs.java:16)
at TRANSFORMER/svmm@1.20.1-1.20.1-1.2.4.0/dev.tourmi.svmm.utils.CommandUtils.getSourceConfig(CommandUtils.java:33)
at TRANSFORMER/svmm@1.20.1-1.20.1-1.2.4.0/dev.tourmi.svmm.commands.TunnelCommand.lambda$getCommand$1(TunnelCommand.java:20)
at MC-BOOTSTRAP/brigadier@1.1.8/com.mojang.brigadier.tree.CommandNode.canUse(CommandNode.java:65)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.server.command.CommandHelper.mergeCommandNode(CommandHelper.java:50)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.server.command.CommandHelper.toResult(CommandHelper.java:108)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.server.command.CommandHelper.mergeCommandNode(CommandHelper.java:52)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.commands.Commands.m_82095_(Commands.java:314)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.players.PlayerList.m_11226_(PlayerList.java:606)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.players.PlayerList.m_11289_(PlayerList.java:499)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.players.PlayerList.m_11261_(PlayerList.java:191)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.network.ServerLoginPacketListenerImpl.m_143699_(ServerLoginPacketListenerImpl.java:139)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.network.ServerLoginPacketListenerImpl.m_10055_(ServerLoginPacketListenerImpl.java:126)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.network.ServerLoginPacketListenerImpl.m_9933_(ServerLoginPacketListenerImpl.java:70)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.network.Connection.m_129483_(Connection.java:263)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.network.ServerConnectionListener.m_9721_(ServerConnectionListener.java:142)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:907)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.client.server.IntegratedServer.m_5705_(IntegratedServer.java:89)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661)
at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251)
at java.base/java.lang.Thread.run(Thread.java:842)
Caused by: java.lang.IllegalArgumentException: Invalid message org.violetmoon.zeta.network.message.C2SUpdateFlag
at TRANSFORMER/forge@47.3.0/net.minecraftforge.network.simple.IndexedMessageCodec.build(IndexedMessageCodec.java:132)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.network.simple.SimpleChannel.encodeMessage(SimpleChannel.java:68)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.network.simple.SimpleChannel.toBuffer(SimpleChannel.java:81)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.network.simple.SimpleChannel.toVanillaPacket(SimpleChannel.java:112)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.network.simple.SimpleChannel.sendTo(SimpleChannel.java:92)
at TRANSFORMER/forge@47.3.0/net.minecraftforge.network.simple.SimpleChannel.sendToServer(SimpleChannel.java:87)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zetaimplforge.network.ForgeZetaNetworkHandler.sendToServer(ForgeZetaNetworkHandler.java:98)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zeta.client.ZetaClient.sendToServer(ZetaClient.java:73)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zeta.client.config.ClientConfigManager.configChanged(ClientConfigManager.java:63)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zeta.event.bus.ZetaEventBus$Listeners.doFireNonCancellable(ZetaEventBus.java:242)
at TRANSFORMER/zeta@1.0-16/org.violetmoon.zeta.event.bus.ZetaEventBus$Listeners.doFire(ZetaEventBus.java:227)
... 40 more

[14:47:50] [Server thread/ERROR] [minecraft/ServerLoginPacketListenerImpl]: Couldn't place player in world
java.lang.RuntimeException: Exception while firing event org.violetmoon.zeta.event.load.ZConfigChanged@176ea5f6:
at org.violetmoon.zeta.event.bus.ZetaEventBus$Listeners.doFire(ZetaEventBus.java:229) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zeta.event.bus.ZetaEventBus.fire(ZetaEventBus.java:103) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zetaimplforge.config.ConfigEventDispatcher.handleConfigChange(ConfigEventDispatcher.java:31) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zetaimplforge.config.ConfigEventDispatcher.configChanged(ConfigEventDispatcher.java:20) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:260) ~[eventbus-6.0.5.jar%23137!/:?] {}
at net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:252) ~[eventbus-6.0.5.jar%23137!/:?] {}
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.5.jar%23137!/:?] {}
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.5.jar%23137!/:?] {}
at net.minecraftforge.fml.javafmlmod.FMLModContainer.lambda$new$0(FMLModContainer.java:44) ~[javafmllanguage-1.20.1-47.3.0.jar%23790!/:?] {}
at net.minecraftforge.fml.ModContainer.lambda$dispatchConfigEvent$8(ModContainer.java:170) ~[fmlcore-1.20.1-47.3.0.jar%23789!/:?] {}
at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {re:mixin}
at net.minecraftforge.fml.ModContainer.dispatchConfigEvent(ModContainer.java:170) ~[fmlcore-1.20.1-47.3.0.jar%23789!/:?] {}
at net.minecraftforge.fml.config.ModConfig.fireEvent(ModConfig.java:77) ~[fmlcore-1.20.1-47.3.0.jar%23789!/:?] {}
at net.minecraftforge.fml.config.ConfigTracker.openConfig(ConfigTracker.java:62) ~[fmlcore-1.20.1-47.3.0.jar%23789!/:?] {}
at net.minecraftforge.fml.config.ConfigTracker.lambda$loadConfigs$1(ConfigTracker.java:50) ~[fmlcore-1.20.1-47.3.0.jar%23789!/:?] {}
at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {re:mixin}
at java.util.Collections$SynchronizedCollection.forEach(Collections.java:2131) ~[?:?] {}
at net.minecraftforge.fml.config.ConfigTracker.loadConfigs(ConfigTracker.java:50) ~[fmlcore-1.20.1-47.3.0.jar%23789!/:?] {}
at dev.tourmi.svmm.config.ClientConfigs.loadOrCreateClientConfig(ClientConfigs.java:25) ~[svmm-1.20.1-1.2.4.0.jar%23754!/:1.20.1-1.2.4.0] {re:classloading}
at dev.tourmi.svmm.config.ClientConfigs.getClientConfig(ClientConfigs.java:16) ~[svmm-1.20.1-1.2.4.0.jar%23754!/:1.20.1-1.2.4.0] {re:classloading}
at dev.tourmi.svmm.utils.CommandUtils.getSourceConfig(CommandUtils.java:33) ~[svmm-1.20.1-1.2.4.0.jar%23754!/:1.20.1-1.2.4.0] {re:classloading}
at dev.tourmi.svmm.commands.TunnelCommand.lambda$getCommand$1(TunnelCommand.java:20) ~[svmm-1.20.1-1.2.4.0.jar%23754!/:1.20.1-1.2.4.0] {re:classloading}
at com.mojang.brigadier.tree.CommandNode.canUse(CommandNode.java:65) ~[brigadier-1.1.8.jar%23106!/:?] {}
at net.minecraftforge.server.command.CommandHelper.mergeCommandNode(CommandHelper.java:50) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:classloading}
at net.minecraftforge.server.command.CommandHelper.toResult(CommandHelper.java:108) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:classloading}
at net.minecraftforge.server.command.CommandHelper.mergeCommandNode(CommandHelper.java:52) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:classloading}
at net.minecraft.commands.Commands.m_82095_(Commands.java:314) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraft.server.players.PlayerList.m_11226_(PlayerList.java:606) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraft.server.players.PlayerList.m_11289_(PlayerList.java:499) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraft.server.players.PlayerList.m_11261_(PlayerList.java:191) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraft.server.network.ServerLoginPacketListenerImpl.m_143699_(ServerLoginPacketListenerImpl.java:139) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:connectivity.mixins.json:ServerLoginNetHandlerMixin,pl:mixin:A}
at net.minecraft.server.network.ServerLoginPacketListenerImpl.m_10055_(ServerLoginPacketListenerImpl.java:126) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:connectivity.mixins.json:ServerLoginNetHandlerMixin,pl:mixin:A}
at net.minecraft.server.network.ServerLoginPacketListenerImpl.m_9933_(ServerLoginPacketListenerImpl.java:70) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:connectivity.mixins.json:ServerLoginNetHandlerMixin,pl:mixin:A}
at net.minecraft.network.Connection.m_129483_(Connection.java:263) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraft.server.network.ServerConnectionListener.m_9721_(ServerConnectionListener.java:142) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,re:classloading}
at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:907) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.client.server.IntegratedServer.m_5705_(IntegratedServer.java:89) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:lithostitched.mixins.json:client.IntegratedServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[client-1.20.1-20230612.114412-srg.jar%23788!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at java.lang.Thread.run(Thread.java:842) ~[?:?] {re:mixin}
Caused by: java.lang.IllegalArgumentException: Invalid message org.violetmoon.zeta.network.message.C2SUpdateFlag
at net.minecraftforge.network.simple.IndexedMessageCodec.build(IndexedMessageCodec.java:132) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:classloading}
at net.minecraftforge.network.simple.SimpleChannel.encodeMessage(SimpleChannel.java:68) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraftforge.network.simple.SimpleChannel.toBuffer(SimpleChannel.java:81) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraftforge.network.simple.SimpleChannel.toVanillaPacket(SimpleChannel.java:112) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraftforge.network.simple.SimpleChannel.sendTo(SimpleChannel.java:92) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:mixin,re:classloading,pl:mixin:A}
at net.minecraftforge.network.simple.SimpleChannel.sendToServer(SimpleChannel.java:87) ~[forge-1.20.1-47.3.0-universal.jar%23793!/:?] {re:mixin,re:classloading,pl:mixin:A}
at org.violetmoon.zetaimplforge.network.ForgeZetaNetworkHandler.sendToServer(ForgeZetaNetworkHandler.java:98) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zeta.client.ZetaClient.sendToServer(ZetaClient.java:73) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zeta.client.config.ClientConfigManager.configChanged(ClientConfigManager.java:63) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zeta.event.bus.ZetaEventBus$Listeners.doFireNonCancellable(ZetaEventBus.java:242) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
at org.violetmoon.zeta.event.bus.ZetaEventBus$Listeners.doFire(ZetaEventBus.java:227) ~[Zeta-1.0-16.jar%23787!/:1.0-16] {re:classloading}
... 40 more