[16:38:58 WARN]: Failed to initialize a channel. Closing: [id: 0xc62d12d7, /162.19.161.41:34809 => /172.18.0.18:16281]
java.lang.ExceptionInInitializerError
        at com.comphenix.net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:166) ~[?:?]
        at com.comphenix.net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[?:?]
        at com.comphenix.net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) ~[?:?]
        at com.comphenix.net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144) ~[?:?]
        at com.comphenix.net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116) ~[?:?]
        at com.comphenix.net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) ~[?:?]
        at com.comphenix.net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) ~[?:?]
        at com.comphenix.net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69) ~[?:?]
        at com.comphenix.protocol.injector.server.TemporaryPlayerFactory.createTemporaryPlayer(TemporaryPlayerFactory.java:164) ~[?:?]
        at com.comphenix.protocol.injector.netty.InjectionFactory.fromChannel(InjectionFactory.java:143) ~[?:?]
        at com.comphenix.protocol.injector.netty.ProtocolInjector$1.initChannel(ProtocolInjector.java:157) ~[?:?]
        at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:69) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:71) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:71) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRegistered(DefaultChannelPipeline.java:732) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:442) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.access$100(AbstractChannel.java:374) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:418) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [server.jar:git-Spigot-db6de12-18fbb24]
        at java.base/java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @16d244b6
        at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[?:?]
        at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[?:?]
        at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) ~[?:?]
        at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) ~[?:?]
        at com.comphenix.net.sf.cglib.core.ReflectUtils$2.run(ReflectUtils.java:56) ~[?:?]
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:318) ~[?:?]
        at com.comphenix.net.sf.cglib.core.ReflectUtils.<clinit>(ReflectUtils.java:46) ~[?:?]
        ... 28 more
[16:38:58 WARN]: An exception was thrown by a user handler's exceptionCaught() method while handling the following exception:
java.lang.NullPointerException: Cannot invoke "io.netty.channel.Channel.isOpen()" because "this.channel" is null
        at net.minecraft.server.v1_8_R3.NetworkManager.close(NetworkManager.java:245) ~[server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.NetworkManager.channelInactive(NetworkManager.java:105) ~[server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:228) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:228) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.handler.timeout.ReadTimeoutHandler.channelInactive(ReadTimeoutHandler.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:769) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:567) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [server.jar:git-Spigot-db6de12-18fbb24]
        at java.base/java.lang.Thread.run(Thread.java:833) [?:?]
[16:38:59 WARN]: Failed to initialize a channel. Closing: [id: 0x94f34300, /162.19.161.41:49065 => /172.18.0.18:16281]
java.lang.NoClassDefFoundError: Could not initialize class com.comphenix.net.sf.cglib.proxy.Enhancer
        at com.comphenix.protocol.injector.server.TemporaryPlayerFactory.createTemporaryPlayer(TemporaryPlayerFactory.java:164) ~[?:?]
        at com.comphenix.protocol.injector.netty.InjectionFactory.fromChannel(InjectionFactory.java:143) ~[?:?]
        at com.comphenix.protocol.injector.netty.ProtocolInjector$1.initChannel(ProtocolInjector.java:157) ~[?:?]
        at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:69) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:71) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:71) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRegistered(DefaultChannelPipeline.java:732) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:442) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.access$100(AbstractChannel.java:374) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:418) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [server.jar:git-Spigot-db6de12-18fbb24]
        at java.base/java.lang.Thread.run(Thread.java:833) [?:?]
[16:38:59 WARN]: An exception was thrown by a user handler's exceptionCaught() method while handling the following exception:
java.lang.NullPointerException: Cannot invoke "io.netty.channel.Channel.isOpen()" because "this.channel" is null
        at net.minecraft.server.v1_8_R3.NetworkManager.close(NetworkManager.java:245) ~[server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.NetworkManager.channelInactive(NetworkManager.java:105) ~[server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:228) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:228) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.handler.timeout.ReadTimeoutHandler.channelInactive(ReadTimeoutHandler.java:144) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:233) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:769) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:567) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268) [server.jar:git-Spigot-db6de12-18fbb24]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [server.jar:git-Spigot-db6de12-18fbb24]
        at java.base/java.lang.Thread.run(Thread.java:833) [?:?]