bug crash minecraft

Bonjours, pour commencer j'espère que je suis dans la bonne catégorie du forum merci de me signaler si je me suis trompé de catégorie.

Donc ce matin j'allume minecraft je vais dans la sélection des serveurs et je ne vois pas leurs icones et les 5 petites barres indiquant la connection sont en chargement sans interruption je trouve ça curieux car je vais sur ces serveurs tout le temps, j'ai donc voulu me connecter sur mon serveur mais ça m'affiche "connecting to the serveur" puis je peut attendre autant que je veux cela ne me connectera pas, j'ai essaillé de me créer une partie solo et mon minecraft crash en me donnant le code d'erreur plus bas, quelqu'un pourrait il me dire d'ou vient le problème ? (mon minecraft marchait parfaitement jusqu'à présent)

Code (cpp):

---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 21/12/15 20:56
Description: Starting integrated server

java.lang.ExceptionInInitializerError
    at net.minecraft.server.MinecraftServer.<init>(SourceFile:114)
    at bsk.<init>(SourceFile:38)
    at azd.a(SourceFile:1591)
    at bbi.a(SourceFile:202)
    at bcd.a(SourceFile:172)
    at bbi.a(SourceFile:301)
    at bcd.d(SourceFile:236)
    at bcd.k(SourceFile:211)
    at azd.o(SourceFile:1303)
    at azd.ad(SourceFile:753)
    at azd.e(SourceFile:704)
    at net.minecraft.client.main.Main.main(SourceFile:103)
Caused by: java.lang.IllegalStateException: failed to create a child event loop
    at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:61)
    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 ms.<clinit>(SourceFile:31)
    ... 12 more
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:57)
    ... 16 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)
    ... 19 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)
    ... 28 more


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

-- Head --
Stacktrace:
    at net.minecraft.server.MinecraftServer.<init>(SourceFile:114)
    at bsk.<init>(SourceFile:38)

-- Starting integrated server --
Details:
    Level ID: New World--
    Level Name: New World
Stacktrace:
    at azd.a(SourceFile:1591)
    at bbi.a(SourceFile:202)
    at bcd.a(SourceFile:172)
    at bbi.a(SourceFile:301)
    at bcd.d(SourceFile:236)
    at bcd.k(SourceFile:211)

-- Affected screen --
Details:
    Screen name: btj
Stacktrace:
    at azd.o(SourceFile:1303)
    at azd.ad(SourceFile:753)
    at azd.e(SourceFile:704)
    at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
    Minecraft Version: 1.7.2
    Operating System: Windows 8.1 (x86) version 6.3
    Java Version: 1.8.0_66, Oracle Corporation
    Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
    Memory: 150881192 bytes (143 MB) / 190402560 bytes (181 MB) up to 523501568 bytes (499 MB)
    JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    Launched Version: 1.7.2
    LWJGL: 2.9.0
    OpenGL: AMD Radeon HD 8280 GL version 4.2.12422 Compatibility Profile Context 13.152.1.3000, ATI Technologies Inc.
    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)
    Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
    Anisotropic Filtering: Off (1)