The game crashed whilst mouseclicked event handler
Error: java.lang.IllegalStateException: failed to create a child event loop

Crash report: 

---- Minecraft Crash Report -------- Minecraft Crash Report ----// There are four lights!
Time: 8/1/19 4:50 PMDescription: mouseClicked event handler
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:59) 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 wb.f(SourceFile:55) at wb$$Lambda$2359/3392912.get(Unknown Source) at zv.a(SourceFile:16) at wb.a(SourceFile:136) at cyc.a(SourceFile:1640) at dfu$a.e(SourceFile:380) at dfu$a.a(SourceFile:311) at dfu$a.mouseClicked(SourceFile:252) at cze.mouseClicked(SourceFile:322) at dad.mouseClicked(SourceFile:27) at cyd.b(SourceFile:86) at cyd$$Lambda$1749/978218406.run(Unknown Source) at dcl.wrapScreenError(SourceFile:441) at cyd.a(SourceFile:86) at cyd$$Lambda$1454/549417478.invoke(Unknown Source) at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36) at org.lwjgl.system.JNI.invokeV(Native Method) at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3174) at cuo.c(SourceFile:291) at cyc.b(SourceFile:1027) at cyc.e(SourceFile:976) at cyc.b(SourceFile:410) at net.minecraft.client.main.Main.main(SourceFile:155)Caused by: io.netty.channel.ChannelException: failed to open a new selector at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:177) at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:151) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:127) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:36) at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84) ... 29 moreCaused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.<init>(PipeImpl.java:170) at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50) at java.nio.channels.Pipe.open(Pipe.java:155) at sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:127) at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44) at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:175) ... 33 moreCaused by: java.net.ConnectException: Connection timed out: connect at sun.nio.ch.Net.connect0(Native Method) at sun.nio.ch.Net.connect(Net.java:458) at sun.nio.ch.Net.connect(Net.java:450) at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648) at java.nio.channels.SocketChannel.open(SocketChannel.java:189) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130) at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83) ... 41 more

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
– Head --Thread: Client threadStacktrace: 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:59) 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 wb.f(SourceFile:55) at wb$$Lambda$2359/3392912.get(Unknown Source) at zv.a(SourceFile:16) at wb.a(SourceFile:136) at cyc.a(SourceFile:1640) at dfu$a.e(SourceFile:380) at dfu$a.a(SourceFile:311) at dfu$a.mouseClicked(SourceFile:252) at cze.mouseClicked(SourceFile:322) at dad.mouseClicked(SourceFile:27) at cyd.b(SourceFile:86) at cyd$$Lambda$1749/978218406.run(Unknown Source)
– Affected screen --Details: Screen name: dftStacktrace: at dcl.wrapScreenError(SourceFile:441) at cyd.a(SourceFile:86) at cyd$$Lambda$1454/549417478.invoke(Unknown Source) at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36) at org.lwjgl.system.JNI.invokeV(Native Method) at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3174) at cuo.c(SourceFile:291) at cyc.b(SourceFile:1027) at cyc.e(SourceFile:976) at cyc.b(SourceFile:410) at net.minecraft.client.main.Main.main(SourceFile:155)
– System Details --Details: Minecraft Version: 1.14.4 Minecraft Version ID: 1.14.4 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: 1184049400 bytes (1129 MB) / 2046820352 bytes (1952 MB) up to 2147483648 bytes (2048 MB) CPUs: 4 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: 1.14.4 LWJGL: 3.2.2 build 10 OpenGL: GeForce GTX 1050 Ti/PCIe/SSE2 GL version 4.6.0 NVIDIA 430.86, 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) CPU: 4x Intel(R) Core(TM) i5-4440 CPU @ 3.10GHz

I tried to fix it, but none of the "solutions" worked.

Things I tried:

-netsh winsock reset in cmd

-reinstalling minecraft

-disabling antivirus and firewall

-turning private network off

-Djava.net.preferIPv4Stack=true to the JVM Argument

I created a post just like this one, then someone tried to help me sending two possible solutions and put the post like "Resolved", but it's not. I really hope someone tries to help me until it gets done.