Version:
ProtocolLib v4.5.0
Java Version:
1.8.0_252
Server:
git-PaperSpigot-"4c7641d" (MC: 1.8.8)
[04:32:39] [Netty Epoll Server IO #3/INFO]: Error Unable to intercept a read client packet. (java.lang.IllegalArgumentException: java.lang.ClassCastException@1ee4e0c) occured in com.comphenix.protocol.injector.netty.ChannelInjector@5ac4b0d6.�[m
[04:32:39] [Netty Epoll Server IO #3/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: java.lang.ClassCastException@1ee4e0c

    hasClosed=false
    classLoader=org.bukkit.plugin.java.PluginClassLoader@138fb0b8
    reporter=com.comphenix.protocol.ProtocolLib$1@742b5784
    server=CraftServer{serverName=CraftBukkit,serverVersion=git-PaperSpigot-"4c7641d",minecraftVersion=1.8.8}
    library=ProtocolLib v4.5.0
    asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@4598dc34
    knowsServerPackets=true
    knowsClientPackets=true
    phaseLoginCount=0
    phasePlayingCount=25
    packetCreation=false
    spigotInjector=<null>
    nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@23c20f26
    pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@4a483dfa
    hasRecycleDistance=true
    minecraftVersion=(MC: 1.8.8)
    loginPackets=com.comphenix.protocol.injector.LoginPackets@421646e4
    debug=false
  ]

Sender:
com.comphenix.protocol.injector.netty.ChannelInjector@68fc1b6f[
factory=com.comphenix.protocol.injector.netty.InjectionFactory@11b5d3c7
player=com.comphenix.protocol.injector.server.TemporaryPlayer$$EnhancerByCGLIB$$499756d7@71cfa428
updated=
playerName=
playerConnection=
networkManager=net.minecraft.server.v1_8_R3.NetworkManager@79204543
originalChannel=[id: 0x2f427ec7, /127.0.0.1:33204 :> /127.0.0.1:612]
channelField=VolatileField [accessor=DefaultFieldAccessor [field=public io.netty.channel.Channel net.minecraft.server.v1_8_R3.NetworkManager.channel], container=net.minecraft.server.v1_8_R3.NetworkManager@79204543, previous=[id: 0x2f427ec7, /127.0.0.1:33204 :> /127.0.0.1:612], current=com.comphenix.protocol.injector.netty.ChannelInjector$3@56dffb44, previousLoaded=true, currentSet=true, forceAccess=true]
packetMarker={}
currentEvent=
finalEvent=
scheduleProcessPackets=java.lang.ThreadLocal$SuppliedThreadLocal@5a3dfb53
vanillaDecoder=us.myles.ViaVersion.bukkit.handlers.BukkitDecodeHandler@21cca70a
vanillaEncoder=us.myles.ViaVersion.bukkit.handlers.BukkitEncodeHandler@7ac37321
finishQueue=[]
channelListener=com.comphenix.protocol.injector.netty.ProtocolInjector@23c20f26
processor=com.comphenix.protocol.injector.NetworkProcessor@663d3cbb
injected=true
closed=false
cumulation=
singleDecode=false
decodeWasNull=false
first=false
added=true
]
Version:
ProtocolLib v4.5.0
Java Version:
1.8.0_252
Server:
git-PaperSpigot-"4c7641d" (MC: 1.8.8)

come again and again and again

Did you solved?

Fixed in b04fca8