mouseClicked event Handler

The bug

Just after loading or creating a world, the game crashes

Stack trace

1.15 Pre-release 3\: [^crash-2019-11-28_20.22.48-client.txt]

Description: 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 xu.f(SourceFile:55)
	at xu$$Lambda$2689/1073849761.get(Unknown Source)
	at abn.a(SourceFile:16)
	at xu.a(SourceFile:136)
	at dbl.a(SourceFile:1621)
	at dji$a.e(SourceFile:379)
	at dji$a.a(SourceFile:311)
	at dji$a.mouseClicked(SourceFile:257)
	at dcp.mouseClicked(SourceFile:321)
	at ddp.mouseClicked(SourceFile:27)
	at dbm.b(SourceFile:86)
	at dbm$$Lambda$2097/2117613330.run(Unknown Source)
	at dfz.wrapScreenError(SourceFile:447)
	at dbm.a(SourceFile:86)
	at dbm.c(SourceFile:150)
	at dbm$$Lambda$2096/2106643654.run(Unknown Source)
	at aip.execute(SourceFile:94)
	at dbm.b(SourceFile:150)
	at dbm$$Lambda$1491/2004057662.invoke(Unknown Source)
	at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
	at org.lwjgl.system.JNI.invokeV(Native Method)
	at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3174)
	at com.mojang.blaze3d.systems.RenderSystem.limitDisplayFPS(SourceFile:123)
	at dbl.d(SourceFile:966)
	at dbl.b(SourceFile:576)
	at net.minecraft.client.main.Main.main(SourceFile:202)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
	at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:177)
	at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:151)
	at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:127)
	at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:36)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84)
	... 32 more
Caused by: java.io.IOException: Unable to establish loopback connection
	at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101)
	at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.nio.ch.PipeImpl.<init>(PipeImpl.java:170)
	at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
	at java.nio.channels.Pipe.open(Pipe.java:155)
	at sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:127)
	at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
	at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:175)
	... 36 more
Caused by: java.net.ConnectException: Connection refused: connect
	at sun.nio.ch.Net.connect0(Native Method)
	at sun.nio.ch.Net.connect(Net.java:458)
	at sun.nio.ch.Net.connect(Net.java:450)
	at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648)
	at java.nio.channels.SocketChannel.open(SocketChannel.java:189)
	at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130)
	at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
	... 44 more