When i try to refresh the motd, this ERROR appears on my console.

[albus12138]

[14:36:56 ERROR]: [ProtocolLib] INTERNAL ERROR: Unable to intercept a read client packet. If this problem hasn't already been reported, please open a ticket at https://github.com/dmulloy2/ProtocolLib/issues with the following data: Stack Trace: java.lang.IllegalArgumentException: source cannot be null! at org.apache.commons.lang.Validate.notNull(Validate.java:192) at com.comphenix.protocol.reflect.FuzzyReflection.getFields(FuzzyReflection.java:582) at com.comphenix.protocol.reflect.FuzzyReflection.getFieldListByType(FuzzyReflection.java:415) at com.comphenix.protocol.reflect.FuzzyReflection.getFieldByType(FuzzyReflection.java:394) at com.comphenix.protocol.reflect.accessors.Accessors.getFieldAccessor(Accessors.java:57) at com.comphenix.protocol.injector.netty.ChannelInjector.handleLogin(ChannelInjector.java:595) at com.comphenix.protocol.injector.netty.ChannelInjector.decode(ChannelInjector.java:534) at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:232) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:131) at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) at com.comphenix.protocol.injector.netty.ChannelInjector$4.channelRead(ChannelInjector.java:273) at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:173) at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:149) at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:100) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:480) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:447) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:341) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) at java.lang.Thread.run(Thread.java:745) Dump: Parameters: io.netty.buffer.UnpooledHeapByteBuf@594f50d[ alloc=io.netty.buffer.UnpooledByteBufAllocator@4832f2f0 array={1,0,0,0,0,1,57,-65,17} tmpNioBuf= refCnt=1 readerIndex=9 writerIndex=9 markedReaderIndex=0 markedWriterIndex=0 maxCapacity=2147483647 swappedBuf= ] manager: com.comphenix.protocol.injector.PacketFilterManager@3de69078[ unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@29d5ddd4 packetListeners=[] packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@5eaee4e6 playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@200241e4 interceptWritePacket=com.comphenix.protocol.injector.packet.InterceptWritePacket@296e70cc inputBufferedPackets=[] recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@2ed23348 sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@7727ba0 hasClosed=false classLoader=org.bukkit.plugin.java.PluginClassLoader@1bd9885c reporter=com.comphenix.protocol.ProtocolLib$1@354d07cb server=CraftServer{serverName=Cauldron,serverVersion=1.7.10-1614.56,minecraftVersion=1.7.10} library=ProtocolLib v4.0.1 asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@5088cf7a knowsServerPackets=true knowsClientPackets=true phaseLoginCount=0 phasePlayingCount=0 packetCreation=false spigotInjector= nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@1f5a7074 pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@4338dcae hasRecycleDistance=true minecraftVersion=(MC: 1.7.10) loginPackets=com.comphenix.protocol.injector.LoginPackets@33f8d14e debug=false ] Sender: com.comphenix.protocol.injector.netty.ChannelInjector@46db2c2a[ factory=com.comphenix.protocol.injector.netty.InjectionFactory@a4e3d55 player=com.comphenix.protocol.injector.server.InjectorContainer$$EnhancerByCGLIB$$c69ad3dc@f965d1e updated= playerName= playerConnection= networkManager=net.minecraft.network.NetworkManager@7a119f03 originalChannel=[id: 0xe4cb49b4, /125.37.81.31:56569 => /10.105.7.53:25565] channelField=VolatileField [accessor=DefaultFieldAccessor [field=private io.netty.channel.Channel net.minecraft.network.NetworkManager.field_150746_k], container=net.minecraft.network.NetworkManager@7a119f03, previous=[id: 0xe4cb49b4, /125.37.81.31:56569 => /10.105.7.53:25565], current=com.comphenix.protocol.injector.netty.ChannelInjector$5@1eeb6b61, previousLoaded=true, currentSet=true, forceAccess=true] packetMarker={} currentEvent= finalEvent= scheduleProcessPackets=com.comphenix.protocol.injector.netty.ChannelInjector$1@4ef8a611 vanillaDecoder=net.minecraft.util.MessageDeserializer@535445cb vanillaEncoder=net.minecraft.util.MessageSerializer@5fd6b748 finishQueue=[] channelListener=com.comphenix.protocol.injector.netty.ProtocolInjector@1f5a7074 processor=com.comphenix.protocol.injector.NetworkProcessor@b92b039 injected=true closed=false cumulation=UnpooledHeapByteBuf(ridx: 9, widx: 9, cap: 9) singleDecode=false decodeWasNull=false added=true ] Version: ProtocolLib v4.0.1 Java Version: 1.8.0_71 Server: 1.7.10-1614.56 (MC: 1.7.10)

[dmulloy2]

1.7 is long obsolete, but you should use build 232: http://ci.dmulloy2.net/job/ProtocolLib/232/