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Bug
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Resolution: Duplicate
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None
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Minecraft 1.13
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None
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Minecraft 1.12.2, Minecraft 1.11.2
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Unconfirmed
When attempting to connect to any servers:
https://gyazo.com/233e5949655d4727875b3e8667d8fcef
Couldn't connect to server java.lang.NullPointerException: group at io.netty.bootstrap.AbstractBootstrap.group(AbstractBootstrap.java:84) at gw.a(SourceFile:276) at bkr$1.run(SourceFile:58)
When attempting to join a singleplayer world:
Reported exception thrown! f: Updating screen events at bib.t(SourceFile:1635) at bib.az(SourceFile:1000) at bib.a(SourceFile:419) at net.minecraft.client.main.Main.main(SourceFile:123) Caused by: java.lang.IllegalStateException: failed to create a child event loop at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:88) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:47) at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:58) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:77) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:72) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:59) at oz$1.a(SourceFile:61) at oz$1.b(SourceFile:58) at rh.c(SourceFile:10) at oz.a(SourceFile:152) at bib.a(SourceFile:2209) at bol.e(SourceFile:229) at bol.a(SourceFile:182) at bol.a(SourceFile:154) at bjm.a(SourceFile:41) at bok.a(SourceFile:117) at blk.k(SourceFile:400) at bok.k(SourceFile:49) at blk.q(SourceFile:377) at bib.t(SourceFile:1625) ... 3 more Caused by: io.netty.channel.ChannelException: failed to open a new selector at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:157) at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:149) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:127) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:36) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84) ... 23 more Caused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.<init>(PipeImpl.java:170) at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50) at java.nio.channels.Pipe.open(Pipe.java:155) at sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:127) at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44) at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:155) ... 27 more Caused by: java.net.BindException: Cannot assign requested address: connect at sun.nio.ch.Net.connect0(Native Method) at sun.nio.ch.Net.connect(Net.java:458) at sun.nio.ch.Net.connect(Net.java:450) at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648) at java.nio.channels.SocketChannel.open(SocketChannel.java:189) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83) ... 35 more 15:07:08launcher ---- Minecraft Crash Report ---- // Ouch. That hurt :( Time: 8/7/18 3:07 PM Description: Updating screen events java.lang.IllegalStateException: failed to create a child event loop at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:88) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:47) at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:58) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:77) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:72) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:59) at oz$1.a(SourceFile:61) at oz$1.b(SourceFile:58) at rh.c(SourceFile:10) at oz.a(SourceFile:152) at bib.a(SourceFile:2209) at bol.e(SourceFile:229) at bol.a(SourceFile:182) at bol.a(SourceFile:154) at bjm.a(SourceFile:41) at bok.a(SourceFile:117) at blk.k(SourceFile:400) at bok.k(SourceFile:49) at blk.q(SourceFile:377) at bib.t(SourceFile:1625) at bib.az(SourceFile:1000) at bib.a(SourceFile:419) at net.minecraft.client.main.Main.main(SourceFile:123) Caused by: io.netty.channel.ChannelException: failed to open a new selector at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:157) at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:149) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:127) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:36) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84) ... 23 more Caused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.<init>(PipeImpl.java:170) at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50) at java.nio.channels.Pipe.open(Pipe.java:155) at sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:127) at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44) at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:155) ... 27 more Caused by: java.net.BindException: Cannot assign requested address: connect at sun.nio.ch.Net.connect0(Native Method) at sun.nio.ch.Net.connect(Net.java:458) at sun.nio.ch.Net.connect(Net.java:450) at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648) at java.nio.channels.SocketChannel.open(SocketChannel.java:189) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83) ... 35 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Client thread Stacktrace: at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:88) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:47) at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:58) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:77) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:72) at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:59) at oz$1.a(SourceFile:61) at oz$1.b(SourceFile:58) at rh.c(SourceFile:10) at oz.a(SourceFile:152) at bib.a(SourceFile:2209) at bol.e(SourceFile:229) at bol.a(SourceFile:182) at bol.a(SourceFile:154) at bjm.a(SourceFile:41) at bok.a(SourceFile:117) at blk.k(SourceFile:400) at bok.k(SourceFile:49) at blk.q(SourceFile:377) -- Affected screen -- Details: Screen name: bli Stacktrace: at bib.t(SourceFile:1625) at bib.az(SourceFile:1000) at bib.a(SourceFile:419) at net.minecraft.client.main.Main.main(SourceFile:123) -- System Details -- Details: Minecraft Version: 1.12.2 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: 97436672 bytes (92 MB) / 218103808 bytes (208 MB) up to 1073741824 bytes (1024 MB) JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95 Launched Version: 1.12.2 LWJGL: 2.9.4 OpenGL: GeForce GTX 1080/PCIe/SSE2 GL version 4.6.0 NVIDIA 398.82, NVIDIA Corporation GL Caps: Using GL 1.3 multitexturing. Using GL 1.3 texture combiners. Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported. Shaders are available because OpenGL 2.1 is supported. VBOs are available because OpenGL 1.5 is supported. Using VBOs: Yes Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Resource Packs: Current Language: English (US) Profiler Position: N/A (disabled) CPU: 8x Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz #@!@# Game crashed! Crash report saved to: #@!@# C:\Users\ghast\AppData\Roaming\.minecraft\crash-reports\crash-2018-08-07_15.07.07-client.txt AL lib: (EE) alc_cleanup: 1 device not closed
- duplicates
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MC-34749 Hopper: java.lang.IllegalStateException: failed to create a child event loop - Caused by AntiVirus / Firewall software
- Resolved