Using latest build of bungee 1068. I think that plugin makes this happens http://www.spigotmc.org/resources/bungee-premium-authenticator-login-only-for-non-premium-new-better-verison-authme-xauth.2750/ After some of these errors bungee crash Spoiler: BungeeCrash 19:28:31 [SEVERE] [NICO_ES_YT] <-> ServerConnector [LogIn] - encountered exception java.util.NoSuchElementException: packet-encoder at io.netty.channel.DefaultChannelPipeline.getContextOrDie(DefaultChannelPipeline.java:907) at io.netty.channel.DefaultChannelPipeline.addBefore(DefaultChannelPipeline.java:157) at io.netty.channel.DefaultChannelPipeline.addBefore(DefaultChannelPipeline.java:150) at net.md_5.bungee.netty.ChannelWrapper.addBefore(ChannelWrapper.java:69) at net.md_5.bungee.netty.ChannelWrapper.setCompressionThreshold(ChannelWrapper.java:81) at net.md_5.bungee.UserConnection.setCompressionThreshold(UserConnection.java:591) at net.md_5.bungee.ServerConnector.handle(ServerConnector.java:146) at net.md_5.bungee.protocol.packet.SetCompression.handle(SetCompression.java:36) at net.md_5.bungee.netty.HandlerBoss.channelRead(HandlerBoss.java:76) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:161) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:150) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:787) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:130) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) at java.lang.Thread.run(Unknown Source) 19:28:31 [INFO] [NICO_ES_YT] disconnected with: §fException Connecting:NoSuchElementException : packet-encoder @ io.netty.channel.DefaultChannelPipeline:907 19:28:31 [INFO] [NICO_ES_YT] <-> ServerConnector [LogIn] has disconnected DOWNGRADE! They said. But same issue happened agai and again with all 985 + versions . Random useless research https://github.com/SpigotMC/BungeeCord/issues/1386 https://github.com/SpigotMC/BungeeCord/issues/1366 pd:#1044 same.