mouseClicked crash while joining world

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 3/20/19 5:58 PM
Description: mouseClicked event handler

java.net.ConnectException: connection refused: local:E:25bba312
	at io.netty.channel.local.LocalChannel$LocalUnsafe.connect(LocalChannel.java:491)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1366)
	at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:545)
	at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:530)
	at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:512)
	at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:1024)
	at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:259)
	at io.netty.bootstrap.Bootstrap$3.run(Bootstrap.java:274)
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Thread: Client thread
Stacktrace:
	at cyi.wrapScreenError(SourceFile:441)

-- Affected screen --
Details:
	Screen name: cxg
Stacktrace:
	at cyi.wrapScreenError(SourceFile:441)
	at cub.a(SourceFile:86)
	at cub$$Lambda$1442/607192333.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:3129)
	at csu.c(SourceFile:292)
	at cua.b(SourceFile:1043)
	at cua.d(SourceFile:992)
	at cua.b(SourceFile:413)
	at net.minecraft.client.main.Main.main(SourceFile:154)

-- System Details --
Details:
	Minecraft Version: 19w12a
	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: 290059176 bytes (276 MB) / 773627904 bytes (737 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 7 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	Launched Version: 19w12a
	LWJGL: 3.2.1 build 12
	OpenGL: GeForce 210/PCIe/SSE2 GL version 3.3.0, 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: Yes
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: vanilla
	Current Language: English (US)
	CPU: 6x AMD Phenom(tm) II X6 1045T Processor