java.lang.RuntimeException: Error occured while instancing generated class.
at com.comphenix.protocol.reflect.compiler.StructureCompiler.compile(StructureCompiler.java:249)
at com.comphenix.protocol.reflect.compiler.CompiledStructureModifier.withTarget(CompiledStructureModifier.java:132)
at com.comphenix.protocol.events.PacketContainer.(PacketContainer.java:139)
at com.comphenix.protocol.injector.netty.ProtocolInjector.onPacketReceiving(ProtocolInjector.java:324)
at com.comphenix.protocol.injector.netty.ChannelInjector.decode(ChannelInjector.java:593)
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at com.comphenix.protocol.injector.netty.ChannelInjector$2.channelRead(ChannelInjector.java:289)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at net.minecraft.network.LegacyPingHandler.channelRead(SourceFile:94)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:808)
at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:404)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:304)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.comphenix.protocol.reflect.compiler.StructureCompiler.compile(StructureCompiler.java:233)
... 36 more
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_12_R1/PacketHandshakingInSetProtocol
at com.comphenix.protocol.reflect.compiler.CompiledStructure$net_minecraft_network_handshake_client_C00Handshake$java_lang_Object.(Unknown Source)
... 41 more
Dump:
Parameters:
io.netty.buffer.PooledUnsafeDirectByteBuf@641633b8[
memoryAddress=139649485987856
recyclerHandle=io.netty.util.Recycler$DefaultHandle@4dae1108
chunk=Chunk(59b1443f: 1%, 90112/16777216)
handle=4611686018427389953
memory=java.nio.DirectByteBuffer[pos=0 lim=16777216 cap=16777216]
offset=8192
length=27
maxLength=32
cache=io.netty.buffer.PoolThreadCache@321826a0
tmpNioBuf=
allocator=PooledByteBufAllocator(directByDefault: true)
refCnt=1
readerIndex=27
writerIndex=27
markedReaderIndex=0
markedWriterIndex=0
maxCapacity=2147483647
]
manager:
com.comphenix.protocol.injector.PacketFilterManager@3394c346[
unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@19c8df61
packetListeners=[PacketAdapter[plugin=HolographicDisplays, sending=ListeningWhitelist[priority=NORMAL, packets=[SPAWN_ENTITY_LIVING[class=PacketPlayOutSpawnEntityLiving, id=2], ENTITY_METADATA[class=PacketPlayOutEntityMetadata, id=77], SPAWN_ENTITY[class=PacketPlayOutSpawnEntity, id=0]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=HolographicExtension, sending=ListeningWhitelist[priority=NORMAL, packets=[ENTITY_METADATA[class=PacketPlayOutEntityMetadata, id=77]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=AdvancedNMotd, sending=EMPTY_WHITELIST, receiving=ListeningWhitelist[priority=NORMAL, packets=[SET_PROTOCOL[class=PacketHandshakingInSetProtocol, id=0]], gamephase=PLAYING, options=[]]]]
packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@2f2f0e20
playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@1a7cede0
inputBufferedPackets=[]
recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@f67831a
sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@500b6640
hasClosed=false
classLoader=org.bukkit.plugin.java.PluginClassLoader@2d759aa5
reporter=com.comphenix.protocol.ProtocolLib$1@7023c6f
server=CraftServer{serverName=Mohist,serverVersion=git-Mohist-1.12.2-298,minecraftVersion=1.12.2}
library=ProtocolLib v4.7.0
asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@4920e186
knowsServerPackets=true
knowsClientPackets=true
phaseLoginCount=0
phasePlayingCount=4
packetCreation=true
nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@6e34e66
pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@519a77a9
hasRecycleDistance=true
minecraftVersion=(MC: 1.12.2)
debug=false

Mohist is not supported