---- Minecraft Crash Report ---- // Uh... Did I do that? Time: 5/15/21 6:20 PM Description: mouseClicked event handler java.lang.IllegalStateException: failed to create a child event loop at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:88) at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:58) at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:47) at io.netty.channel.MultithreadEventLoopGroup.null <init>(null)(MultithreadEventLoopGroup.java:59) at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:77) at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:72) at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:59) at net.minecraft.server.network.ServerConnectionListener.io.netty.channel.nio.NioEventLoopGroup lambda$static$0()(ServerConnectionListener.java:56) at aax$$Lambda$4065/1509934246.get(Unknown Source) at net.minecraft.util.LazyLoadedValue.java.lang.Object get()(LazyLoadedValue.java:16) at net.minecraft.server.network.ServerConnectionListener.java.net.SocketAddress startMemoryChannel()(ServerConnectionListener.java:138) at net.minecraft.client.Minecraft.void doLoadLevel(java.lang.String,net.minecraft.core.RegistryAccess$RegistryHolder,java.util.function.Function,com.mojang.datafixers.util.Function4,boolean,net.minecraft.client.Minecraft$ExperimentalDialogType)(Minecraft.java:1891) at net.minecraft.client.Minecraft.void loadLevel(java.lang.String)(Minecraft.java:1748) at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.void loadWorld()(WorldSelectionList.java:407) at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.void joinWorld()(WorldSelectionList.java:317) at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.boolean mouseClicked(double,double,int)(WorldSelectionList.java:254) at net.minecraft.client.gui.components.AbstractSelectionList.boolean mouseClicked(double,double,int)(AbstractSelectionList.java:345) at net.minecraft.client.gui.components.events.ContainerEventHandler.boolean mouseClicked(double,double,int)(ContainerEventHandler.java:27) at net.minecraft.client.gui.components.events.ContainerEventHandler.void setFocused(net.minecraft.client.gui.components.events.GuiEventListener)(ContainerEventHandler.java:27) at net.minecraft.client.MouseHandler.void lambda$onPress$0(boolean[],double,double,int)(MouseHandler.java:92) at dka$$Lambda$3019/1296428172.run(Unknown Source) at net.minecraft.client.gui.screens.Screen.void wrapScreenError(java.lang.Runnable,java.lang.String,java.lang.String)(Screen.java:435) at net.minecraft.client.MouseHandler.void onPress(long,int,int,int)(MouseHandler.java:92) at net.minecraft.client.MouseHandler.void lambda$null$4(long,int,int,int)(MouseHandler.java:162) at dka$$Lambda$3018/314916247.run(Unknown Source) at net.minecraft.util.thread.BlockableEventLoop.void execute(java.lang.Runnable)(BlockableEventLoop.java:94) at net.minecraft.client.MouseHandler.void lambda$setup$5(long,int,int,int)(MouseHandler.java:162) at dka$$Lambda$2371/106108132.invoke(Unknown Source) at org.lwjgl.glfw.GLFWMouseButtonCallbackI.null callback(null)(GLFWMouseButtonCallbackI.java:36) at org.lwjgl.system.JNI.null invokeV(null)(JNI.java) at org.lwjgl.glfw.GLFW.null glfwWaitEventsTimeout(null)(GLFW.java:3174) at com.mojang.blaze3d.systems.RenderSystem.void limitDisplayFPS(int)(RenderSystem.java:127) at net.minecraft.client.Minecraft.void runTick(boolean)(Minecraft.java:1071) at net.minecraft.client.Minecraft.void run()(Minecraft.java:681) at net.minecraft.client.main.Main.void main(java.lang.String[])(Main.java:215) Caused by: io.netty.channel.ChannelException: failed to open a new selector at io.netty.channel.nio.NioEventLoop.null openSelector(null)(NioEventLoop.java:177) at io.netty.channel.nio.NioEventLoop.null <init>(null)(NioEventLoop.java:151) at io.netty.channel.nio.NioEventLoopGroup.null newChild(null)(NioEventLoopGroup.java:127) at io.netty.channel.nio.NioEventLoopGroup.null newChild(null)(NioEventLoopGroup.java:36) at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:84) ... 33 more Caused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.null run(null)(PipeImpl.java:101) at sun.nio.ch.PipeImpl$Initializer.null run(null)(PipeImpl.java:68) at java.security.AccessController.null doPrivileged(null)(AccessController.java) at sun.nio.ch.PipeImpl.null <init>(null)(PipeImpl.java:170) at sun.nio.ch.SelectorProviderImpl.null openPipe(null)(SelectorProviderImpl.java:50) at java.nio.channels.Pipe.null open(null)(Pipe.java:155) at sun.nio.ch.WindowsSelectorImpl.null <init>(null)(WindowsSelectorImpl.java:127) at sun.nio.ch.WindowsSelectorProvider.null openSelector(null)(WindowsSelectorProvider.java:44) at io.netty.channel.nio.NioEventLoop.null openSelector(null)(NioEventLoop.java:175) ... 37 more Caused by: java.net.BindException: Cannot assign requested address: connect at sun.nio.ch.Net.null connect0(null)(Net.java) at sun.nio.ch.Net.null connect(null)(Net.java:458) at sun.nio.ch.Net.null connect(null)(Net.java:450) at sun.nio.ch.SocketChannelImpl.null connect(null)(SocketChannelImpl.java:648) at java.nio.channels.SocketChannel.null open(null)(SocketChannel.java:189) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.null run(null)(PipeImpl.java:130) at sun.nio.ch.PipeImpl$Initializer.null run(null)(PipeImpl.java:83) ... 45 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:88) at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:58) at io.netty.util.concurrent.MultithreadEventExecutorGroup.null <init>(null)(MultithreadEventExecutorGroup.java:47) at io.netty.channel.MultithreadEventLoopGroup.null <init>(null)(MultithreadEventLoopGroup.java:59) at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:77) at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:72) at io.netty.channel.nio.NioEventLoopGroup.null <init>(null)(NioEventLoopGroup.java:59) at net.minecraft.server.network.ServerConnectionListener.io.netty.channel.nio.NioEventLoopGroup lambda$static$0()(ServerConnectionListener.java:56) at aax$$Lambda$4065/1509934246.get(Unknown Source) at net.minecraft.util.LazyLoadedValue.java.lang.Object get()(LazyLoadedValue.java:16) at net.minecraft.server.network.ServerConnectionListener.java.net.SocketAddress startMemoryChannel()(ServerConnectionListener.java:138) at net.minecraft.client.Minecraft.void doLoadLevel(java.lang.String,net.minecraft.core.RegistryAccess$RegistryHolder,java.util.function.Function,com.mojang.datafixers.util.Function4,boolean,net.minecraft.client.Minecraft$ExperimentalDialogType)(Minecraft.java:1891) at net.minecraft.client.Minecraft.void loadLevel(java.lang.String)(Minecraft.java:1748) at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.void loadWorld()(WorldSelectionList.java:407) at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.void joinWorld()(WorldSelectionList.java:317) at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.boolean mouseClicked(double,double,int)(WorldSelectionList.java:254) at net.minecraft.client.gui.components.AbstractSelectionList.boolean mouseClicked(double,double,int)(AbstractSelectionList.java:345) at net.minecraft.client.gui.components.events.ContainerEventHandler.boolean mouseClicked(double,double,int)(ContainerEventHandler.java:27) at net.minecraft.client.gui.components.events.ContainerEventHandler.void setFocused(net.minecraft.client.gui.components.events.GuiEventListener)(ContainerEventHandler.java:27) at net.minecraft.client.MouseHandler.void lambda$onPress$0(boolean[],double,double,int)(MouseHandler.java:92) at dka$$Lambda$3019/1296428172.run(Unknown Source) -- Affected screen -- Details: Screen name: net.minecraft.client.gui.screens.worldselection.SelectWorldScreen Stacktrace: at net.minecraft.client.gui.screens.Screen.void wrapScreenError(java.lang.Runnable,java.lang.String,java.lang.String)(Screen.java:435) at net.minecraft.client.MouseHandler.void onPress(long,int,int,int)(MouseHandler.java:92) at net.minecraft.client.MouseHandler.void lambda$null$4(long,int,int,int)(MouseHandler.java:162) at dka$$Lambda$3018/314916247.run(Unknown Source) at net.minecraft.util.thread.BlockableEventLoop.void execute(java.lang.Runnable)(BlockableEventLoop.java:94) at net.minecraft.client.MouseHandler.void lambda$setup$5(long,int,int,int)(MouseHandler.java:162) at dka$$Lambda$2371/106108132.invoke(Unknown Source) at org.lwjgl.glfw.GLFWMouseButtonCallbackI.null callback(null)(GLFWMouseButtonCallbackI.java:36) at org.lwjgl.system.JNI.null invokeV(null)(JNI.java) at org.lwjgl.glfw.GLFW.null glfwWaitEventsTimeout(null)(GLFW.java:3174) at com.mojang.blaze3d.systems.RenderSystem.void limitDisplayFPS(int)(RenderSystem.java:127) at net.minecraft.client.Minecraft.void runTick(boolean)(Minecraft.java:1071) at net.minecraft.client.Minecraft.void run()(Minecraft.java:681) at net.minecraft.client.main.Main.void main(java.lang.String[])(Main.java:215) -- System Details -- Details: Minecraft Version: 1.16.5 Minecraft Version ID: 1.16.5 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1348390160 bytes (1285 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB) CPUs: 8 JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Launched Version: 1.16.5 Backend library: LWJGL version 3.2.2 build 10 Backend API: NVIDIA GeForce RTX 2060 SUPER/PCIe/SSE2 GL version 4.6.0 NVIDIA 466.11, NVIDIA Corporation GL Caps: Using framebuffer using OpenGL 3.0 Using VBOs: Yes Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Graphics mode: fancy Resource Packs: Current Language: English (US) CPU: 8x Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz