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[WARN] [minecraft/PlayerDataStorage]: Failed to save player data for [PLAYERNAME]

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[WARN] [minecraft/SynchedEntityData]: defineId called for: class dev.itsmeow.whisperwoods.entity.EntityZotzpyre from class dev.itsmeow.whisperwoods.imdlib.entity.EntityTypeContainer

21:35:31[INFO] [minecraft/ServerGamePacketListenerImpl]: Piquaso lost connection: Disconnected

21:35:31[INFO] [minecraft/DedicatedServer]: Piquaso left the game

[21:35:31] [Server thread/FATAL] [ne.mi.fm.lo.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/gui/screens/Screen for invalid dist DEDICATED_SERVER

21:35:31[ERROR] [ne.mi.ev.EventSubclassTransformer/EVENTBUS]: An error occurred building event handler

java.lang.RuntimeException: Attempted to load class net/minecraft/client/gui/screens/Screen for invalid dist DEDICATED_SERVER

at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:57) ~[fmlloader-1.18.2-40.1.73.jar%2317!/:1.0] {}

at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88) ~[modlauncher-9.1.3.jar%235!/:?] {}

at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-9.1.3.jar%235!/:?] {}

at cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50) ~[modlauncher-9.1.3.jar%235!/:?] {}

at cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:110) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.lambda$findClass$16(ModuleClassLoader.java:216) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:226) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:216) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:132) ~[securejarhandler-1.0.3.jar:?] {}

at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] {}

at net.minecraftforge.eventbus.EventSubclassTransformer.buildEvents(EventSubclassTransformer.java:62) ~[eventbus-5.0.3.jar%232!/:?] {}

at net.minecraftforge.eventbus.EventSubclassTransformer.transform(EventSubclassTransformer.java:44) ~[eventbus-5.0.3.jar%232!/:?] {}

at net.minecraftforge.eventbus.EventBusEngine.processClass(EventBusEngine.java:21) ~[eventbus-5.0.3.jar%232!/:?] {}

at net.minecraftforge.eventbus.service.ModLauncherService.processClassWithFlags(ModLauncherService.java:20) ~[eventbus-5.0.3.jar%232!/:5.0.3+70+master.d7d405b] {}

at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88) ~[modlauncher-9.1.3.jar%235!/:?] {}

at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-9.1.3.jar%235!/:?] {}

at cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50) ~[modlauncher-9.1.3.jar%235!/:?] {}

at cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:110) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.lambda$findClass$16(ModuleClassLoader.java:216) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:226) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:216) ~[securejarhandler-1.0.3.jar:?] {}

at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:132) ~[securejarhandler-1.0.3.jar:?] {}

at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] {}

at com.minecraftserverzone.jrhc.setup.capabilities.PlayerStatsProvider.serializeNBT(PlayerStatsProvider.java:38) ~[jrhc-1-18-x.jar%2371!/:1-18-x] {re:classloading}

at com.minecraftserverzone.jrhc.setup.capabilities.PlayerStatsProvider.serializeNBT(PlayerStatsProvider.java:16) ~[jrhc-1-18-x.jar%2371!/:1-18-x] {re:classloading}

at net.minecraftforge.common.capabilities.CapabilityDispatcher.serializeNBT(CapabilityDispatcher.java:115) ~[forge-1.18.2-40.1.73-universal.jar%23111!/:?] {re:classloading}

at net.minecraftforge.common.capabilities.CapabilityProvider.serializeCaps(CapabilityProvider.java:132) ~[forge-1.18.2-40.1.73-universal.jar%23111!/:?] {re:computing_frames,re:mixin,re:classloading}

at net.minecraft.world.entity.Entity.m_20240_(Entity.java:1490) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:beyond_earth.mixin.json:EntityTick,pl:mixin:APP:supplem

entaries.mixins.json:EntityMixin,pl:mixin:APP:braincell.mixins.json:EntityMixin,pl:mixin:APP:quark.mixins.json:EntityMixin,pl:mixin:A}

at net.minecraft.world.level.storage.PlayerDataStorage.m_78433_(PlayerDataStorage.java:28) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:classloading}

at net.minecraft.server.players.PlayerList.m_6765_(PlayerList.java:309) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:classloading}

at net.minecraft.server.players.PlayerList.m_11286_(PlayerList.java:326) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:classloading}

at net.minecraft.server.network.ServerGamePacketListenerImpl.m_7026_(ServerGamePacketListenerImpl.java:1063) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:braincell.

mixins.json:ServerGamePacketListenerImplMixin,pl:mixin:APP:dannys_expansion.mixins.json:ServerGamePacketListenerImplMixin,pl:mixin:A}

at net.minecraft.network.Connection.m_129541_(Connection.java:396) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:classloading}

at net.minecraft.server.network.ServerConnectionListener.m_9721_(ServerConnectionListener.java:158) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:classloading}

at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:916) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:terrablender.mixins.json:MixinMinecraftServer

,pl:mixin:A}

at net.minecraft.server.dedicated.DedicatedServer.m_5703_(DedicatedServer.java:326) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:classloading,pl:accesstransformer:B}

at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:842) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:terrablender.mixins.json:MixinMinecraftServer

,pl:mixin:A}

at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:685) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:terrablender.mixins.json:MixinMinecraftServ

er,pl:mixin:A}

at net.minecraft.server.MinecraftServer.m_177918_(MinecraftServer.java:261) ~[server-1.18.2-20220404.173914-srg.jar%23106!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:terrablender.mixins.json:MixinMinecraftServ

er,pl:mixin:A}

at java.lang.Thread.run(Unknown Source) [?:?] {}

[21:35:31] [Server thread/FATAL] [ne.mi.fm.lo.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/gui/screens/Screen for invalid dist DEDICATED_SERVER

21:35:31[WARN] [minecraft/PlayerDataStorage]: Failed to save player data for Piquaso

21:35:31[ERROR] [ne.mi.ev.EventSubclassTransformer/EVENTBUS]: An error occurred building event handler

java.lang.RuntimeException: Attempted to load class net/minecraft/client/gui/screens/Screen for invalid dist DEDICATED_SERVER

-- snip --

at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] {}

at com.minecraftserverzone.jrhc.setup.capabilities.PlayerStatsProvider.serializeNBT(PlayerStatsProvider.java:38) ~[jrhc-1-18-x.jar%2371!/:1-18-x] {re:classloading}

Looks like an issue with the jrhc mod. It is trying to load client/gui classes on the server.

Check you have the latest version then contact the mod author.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

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