java.lang.IllegalStateException: failed to create a child event loop

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failed to create a child event loop
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failed to create a child event loop
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:197)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:139)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl.(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.(WindowsSelectorImpl.java:127)
at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:125)
at io.netty.channel.nio.NioEventLoop.(NioEventLoop.java:119)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:97)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:31)
at io.netty.util.concurrent.MultithreadEventExecutorGroup.(MultithreadEventExecutorGroup.java:77)
at io.netty.channel.MultithreadEventLoopGroup.(MultithreadEventLoopGroup.java:50)
at io.netty.channel.nio.NioEventLoopGroup.(NioEventLoopGroup.java:72)
at io.netty.channel.nio.NioEventLoopGroup.(NioEventLoopGroup.java:58)
at org.jetbrains.io.BuiltInServer.start(BuiltInServer.java:78)
at com.intellij.idea.SocketLock$2.call(SocketLock.java:131)
at com.intellij.idea.SocketLock$2.call(SocketLock.java:112)
at com.intellij.idea.SocketLock.underLocks(SocketLock.java:155)
at com.intellij.idea.SocketLock.lock(SocketLock.java:112)
at com.intellij.idea.StartupUtil.lockSystemFolders(StartupUtil.java:263)
at com.intellij.idea.StartupUtil.prepareAndStart(StartupUtil.java:101)
at com.intellij.idea.MainImpl.start(MainImpl.java:34)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at java.lang.Thread.run(Thread.java:745)

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