How to use NpcLib and PacketEvents in the same plugin?

[KabanFriends]

I'm having trouble setting up NpcLib to work in a plugin that already uses PacketEvents API. How can I do that?

I'm getting errors like this on log in:

[19:36:05 WARN]: [io.netty.channel.DefaultChannelPipeline] An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
java.lang.IllegalArgumentException: Duplicate handler name: pe-connection-initializer-blueberry
        at io.netty.channel.DefaultChannelPipeline.checkDuplicateName(DefaultChannelPipeline.java:1004) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.DefaultChannelPipeline.filterName(DefaultChannelPipeline.java:260) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.DefaultChannelPipeline.internalAdd(DefaultChannelPipeline.java:167) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:227) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:222) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at packetevents-spigot-2.9.4.jar/io.github.retrooper.packetevents.injector.connection.ServerChannelHandler.channelRead(ServerChannelHandler.java:71) ~[packetevents-spigot-2.9.4.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at packetevents-spigot-2.9.4.jar/io.github.retrooper.packetevents.injector.connection.ServerChannelHandler.channelRead(ServerChannelHandler.java:75) ~[packetevents-spigot-2.9.4.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at floodgate-spigot.jar/org.geysermc.floodgate.inject.spigot.SpigotInjector$2.channelRead(SpigotInjector.java:113) ~[floodgate-spigot.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868) ~[netty-transport-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.epoll.AbstractEpollServerChannel$EpollServerSocketUnsafe.epollInReady(AbstractEpollServerChannel.java:120) ~[netty-transport-classes-epoll-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:501) ~[netty-transport-classes-epoll-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:399) ~[netty-transport-classes-epoll-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998) ~[netty-common-4.1.118.Final.jar:4.1.118.Final]
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.118.Final.jar:4.1.118.Final]
        at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]

[derklaro]

I suppose there is another part in the plugin that initializes the packet events api? EDIT: I think I understand how this happens, probably need to just re-use and existing api instance instead of creating a new one

[0utplay]

Hi, this should be resolved with beta.15. You should be able to include the npc-lib in your plugin together with packetevents