Error entering the lobby(java.lang.Error:)

java.lang.Error: java.nio.charset.UnmappableCharacterException: Input length = 2
at java.base/java.lang.String.decodeWithDecoder(String.java:1212)
at java.base/java.lang.String.newStringNoRepl1(String.java:786)
at java.base/java.lang.String.newStringNoRepl(String.java:738)
at java.base/java.lang.System$2.newStringNoRepl(System.java:2390)
at java.base/java.nio.file.Files.readString(Files.java:3369)
at com.faforever.client.mod.ModService.readPreferencesFile(ModService.java:313)
at com.faforever.client.mod.ModService.readActiveMods(ModService.java:329)
at com.faforever.client.mod.ModService.enableSimMods(ModService.java:231)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:699)
at com.faforever.client.mod.ModService$$SpringCGLIB$$0.enableSimMods(<generated>)
at com.faforever.client.game.GameService.lambda$joinGame$10(GameService.java:332)
at java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:787)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
at com.faforever.client.task.CompletableTask.lambda$new$2(CompletableTask.java:19)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:234)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.concurrent.EventHelper.fireEvent(EventHelper.java:219)
at javafx.concurrent.Task.fireEvent(Task.java:1359)
at javafx.concurrent.Task.setState(Task.java:725)
at javafx.concurrent.Task$TaskCallable.lambda$call$1(Task.java:1437)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.nio.charset.UnmappableCharacterException: Input length = 2
at java.base/java.nio.charset.CoderResult.throwException(CoderResult.java:275)
at java.base/java.lang.String.decodeWithDecoder(String.java:1205)
... 38 common frames omitted

Occurred after updating the client to version 2023.1.2

Solution found

There's a special rung in hell reserved for people who writes "Solution found" without details.

And what is the solution? I have the same issue.

try to remove game.prefs file, it helper for me

@benderulas это только на 1 раз

У меня такая же проблема.

@benderulas said in Error entering the lobby(java.lang.Error:):

try to remove game.prefs file, it helper for me

Привет а где найти этот файл?

@Player351RU75

https://forum.faforever.com/post/41558

Was having issues with java in the menus, error said was to do with mod mod manager couldn't look or reset the mods, was unable to join games.

Followed "magge" post there

https://forum.faforever.com/post/41558

new alpha fixed it! Many thanks and hope the FerGanec guy found hell!