Server Kick off players and leaving them still in the world causing crash

When starting the server I am able to run around and do everything I need to but other players are being kicked out of the server and a version of them (that can still be hit/killed) is left behind. They are getting an error "Internal exception: io.netty.handler.timeout.readTimeoutexception". I have restarted the server multiple times, updated my java and even used different GUI's incluging the minecraftserver1.8.exe file. Also, when I backed up the other world (which was made in 1.8 along with all server files) and created a new world the players weren't kicked. This is what gets spammed in my console when I stop the server.

6:05:28 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:28 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:28 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:28 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:28 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:28 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:28 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:28 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:28 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:28 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:28 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:28 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:28 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:28 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:28 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:28 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:28 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:28 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:28 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:28 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:28 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:28 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:28 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:28 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:28 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:29 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:29 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:29 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:29 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:29 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:29 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:29 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:29 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)
6:05:29 PM [javastacktrace] at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:267)
6:05:29 PM [javastacktrace] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:694)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:321)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:515)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378)
6:05:29 PM [javastacktrace] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350)
6:05:29 PM [javastacktrace] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
6:05:29 PM [javastacktrace] at java.lang.Thread.run(Unknown Source)