Problems with Minecraft 1.12.2?

This is the report of the crash btw

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 10/4/18 10:33 PM
Description: Updating screen events

java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEven…
at io.netty.util.concurrent.MultithreadEven…
at io.netty.util.concurrent.MultithreadEven…
at io.netty.channel.MultithreadEventLoopGro…
at io.netty.channel.nio.NioEventLoopGroup.<…
at io.netty.channel.nio.NioEventLoopGroup.<…
at io.netty.channel.nio.NioEventLoopGroup.<…
at oz$1.a(SourceFile:61)
at oz$1.b(SourceFile:58)
at rh.c(SourceFile:10)
at oz.a(SourceFile:152)
at bib.a(SourceFile:2209)
at boi.a(SourceFile:212)
at blk.a(SourceFile:337)
at boi.a(SourceFile:352)
at blk.k(SourceFile:400)
at blk.q(SourceFile:377)
at bib.t(SourceFile:1625)
at bib.az(SourceFile:1000)
at bib.a(SourceFile:419)
at net.minecraft.client.main.Main.main(Sour…
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSe…
at io.netty.channel.nio.NioEventLoop.<init>…
at io.netty.channel.nio.NioEventLoopGroup.n…
at io.netty.channel.nio.NioEventLoopGroup.n…
at io.netty.util.concurrent.MultithreadEven…
… 20 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(Unkn… Source)
at sun.nio.ch.PipeImpl$Initializer.run(Unkn… Source)
at java.security.AccessController.doPrivile… Method)
at sun.nio.ch.PipeImpl.<init>(Unknown Source)
at sun.nio.ch.SelectorProviderImpl.openPipe… Source)
at java.nio.channels.Pipe.open(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.<init>(Un… Source)
at sun.nio.ch.WindowsSelectorProvider.openS… Source)
at io.netty.channel.nio.NioEventLoop.openSe…
… 24 more
Caused by: java.net.ConnectException: Connection timed out: connect
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Unknown Source)
at sun.nio.ch.Net.connect(Unknown Source)
at sun.nio.ch.SocketChannelImpl.connect(Unk… Source)
at java.nio.channels.SocketChannel.open(Unk… Source)
at sun.nio.ch.PipeImpl$Initializer$Loopback… Source)
… 33 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.MultithreadEven…
at io.netty.util.concurrent.MultithreadEven…
at io.netty.util.concurrent.MultithreadEven…
at io.netty.channel.MultithreadEventLoopGro…
at io.netty.channel.nio.NioEventLoopGroup.<…
at io.netty.channel.nio.NioEventLoopGroup.<…
at io.netty.channel.nio.NioEventLoopGroup.<…
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 boi.a(SourceFile:212)
at blk.a(SourceFile:337)
at boi.a(SourceFile:352)
at blk.k(SourceFile:400)
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(Sour…

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (x86) version 10.0
Java Version: 1.8.0_181, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 127863384 bytes (121 MB) / 290545664 bytes (277 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX: HeapDumpPath=MojangTricksIntelDriver… -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 9, allocated: 20, tallocated: 86
Launched Version: 1.12.2
LWJGL: 2.9.4
OpenGL: GeForce GTX 1070 Ti/PCIe/SSE2 GL version 4.6.0 NVIDIA 416.16, 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: 6x Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz