[22:28:35] [Netty Server IO #1/WARN]: Failed to initialize a channel. Closing: [id: 0x6239d8c8, /127.0.0.1:6509 => /127.0.0.1:101]
java.lang.IllegalArgumentException: Duplicate handler name: viaversion_packet_handler
	at io.netty.channel.DefaultChannelPipeline.checkDuplicateName(DefaultChannelPipeline.java:900) ~[spigot.jar:1.8.8]
	at io.netty.channel.DefaultChannelPipeline.addAfter(DefaultChannelPipeline.java:189) ~[spigot.jar:1.8.8]
	at io.netty.channel.DefaultChannelPipeline.addAfter(DefaultChannelPipeline.java:181) ~[spigot.jar:1.8.8]
	at com.ngxdev.viaversion.bukkit.handlers.BukkitChannelInitializer.initChannel(BukkitChannelInitializer.java:56) ~[spigot.jar:1.8.8]
	at com.ngxdev.viaversion.bukkit.handlers.BukkitChannelInitializer.initChannel(BukkitChannelInitializer.java:17) ~[spigot.jar:1.8.8]
	at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:69) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [spigot.jar:1.8.8]
	at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:71) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [spigot.jar:1.8.8]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRegistered(DefaultChannelPipeline.java:732) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:442) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.access$100(AbstractChannel.java:374) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:418) [spigot.jar:1.8.8]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) [spigot.jar:1.8.8]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357) [spigot.jar:1.8.8]
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [spigot.jar:1.8.8]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_232]
[22:28:35] [Netty Server IO #1/WARN]: An exception was thrown by a user handler's exceptionCaught() method while handling the following exception:
java.lang.NullPointerException
	at net.minecraft.server.v1_8_R3.NetworkManager.close(NetworkManager.java:246) ~[spigot.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.NetworkManager.channelInactive(NetworkManager.java:101) ~[spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [spigot.jar:1.8.8]
	at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:228) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [spigot.jar:1.8.8]
	at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:228) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [spigot.jar:1.8.8]
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [spigot.jar:1.8.8]
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [spigot.jar:1.8.8]
	at io.netty.handler.timeout.ReadTimeoutHandler.channelInactive(ReadTimeoutHandler.java:144) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [spigot.jar:1.8.8]
	at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [spigot.jar:1.8.8]
	at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:769) [spigot.jar:1.8.8]
	at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:567) [spigot.jar:1.8.8]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) [spigot.jar:1.8.8]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357) [spigot.jar:1.8.8]
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [spigot.jar:1.8.8]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_232]