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  1. Minecraft: Java Edition
  2. MC-95486

Java.lang.NullpointerException when trying to join Multiplayer, and causes game to crash when I play Singleplayer in versions later than 1.6

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • None
    • Minecraft 1.8.9
    • None
    • Windows NT 6.1, Java Version 1.8.0_45
    • Unconfirmed

      Here's the Crash Report:
      ---- Minecraft Crash Report ----
      // I'm sorry, Dave.

      Time: 1/10/16 8:31 PM
      Description: Updating screen events

      java.lang.IllegalStateException: failed to create a child event loop
      at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
      at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
      at ll$1.a(SourceFile:44)
      at ll$1.b(SourceFile:41)
      at no.c(SourceFile:10)
      at ll.a(SourceFile:121)
      at ave.a(SourceFile:1942)
      at axv.i(SourceFile:172)
      at axv.a(SourceFile:135)
      at axu.a(SourceFile:350)
      at axu.k(SourceFile:413)
      at axv.k(SourceFile:81)
      at axu.p(SourceFile:390)
      at ave.s(SourceFile:1498)
      at ave.av(SourceFile:889)
      at ave.a(SourceFile:325)
      at net.minecraft.client.main.Main.main(SourceFile:124)
      Caused by: io.netty.channel.ChannelException: failed to open a new selector
      at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
      at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
      at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
      at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64)
      ... 18 more
      Caused by: java.io.IOException: Unable to establish loopback connection
      at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
      at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      at sun.nio.ch.PipeImpl.<init>(Unknown Source)
      at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source)
      at java.nio.channels.Pipe.open(Unknown Source)
      at sun.nio.ch.WindowsSelectorImpl.<init>(Unknown Source)
      at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source)
      at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
      ... 21 more
      Caused by: java.net.ConnectException: Connection timed out: connect
      at sun.nio.ch.Net.connect0(Native Method)
      at sun.nio.ch.Net.connect(Unknown Source)
      at sun.nio.ch.Net.connect(Unknown Source)
      at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)
      at java.nio.channels.SocketChannel.open(Unknown Source)
      at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source)
      ... 30 more

      A detailed walkthrough of the error, its code path and all known details is as follows:
      ---------------------------------------------------------------------------------------

      – Head –
      Stacktrace:
      at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
      at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
      at ll$1.a(SourceFile:44)
      at ll$1.b(SourceFile:41)
      at no.c(SourceFile:10)
      at ll.a(SourceFile:121)
      at ave.a(SourceFile:1942)
      at axv.i(SourceFile:172)
      at axv.a(SourceFile:135)
      at axu.a(SourceFile:350)
      at axu.k(SourceFile:413)
      at axv.k(SourceFile:81)
      at axu.p(SourceFile:390)

      – Affected screen –
      Details:
      Screen name: aya
      Stacktrace:
      at ave.s(SourceFile:1498)
      at ave.av(SourceFile:889)
      at ave.a(SourceFile:325)
      at net.minecraft.client.main.Main.main(SourceFile:124)

      – System Details –
      Details:
      Minecraft Version: 1.8.9
      Operating System: Windows 7 (amd64) version 6.1
      Java Version: 1.8.0_45, Oracle Corporation
      Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
      Memory: 68303424 bytes (65 MB) / 274972672 bytes (262 MB) up to 1060372480 bytes (1011 MB)
      JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
      IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
      Launched Version: 1.8.9
      LWJGL: 2.9.4
      OpenGL: GeForce GT 555M/PCIe/SSE2 GL version 4.3.0, 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: No
      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) i7-2670QM CPU @ 2.20GHz

      All I did was just join Singleplayer to generate the crash report. What's going on?

            Unassigned Unassigned
            yalc2 Clay Goertemiller
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              Created:
              Updated:
              Resolved: