Duplicate class error from java-client 8.0.0-beta

Description

Hi, so I tried to import java-client to Android Studio. When I press debug, it showed me a bunch of errors that I don't know how to fix:

Duplicate class io.netty.channel.epoll.AbstractEpollChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollChannel$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollChannel$2 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$2 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$3 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollServerChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollServerChannel$EpollServerSocketUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$2 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$3 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$4 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$5 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$6 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$7 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$EpollSocketWritableByteChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$SpliceFdTask found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$SpliceInChannelTask found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$SpliceInTask found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.AbstractEpollStreamChannel$SpliceOutTask found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.Epoll found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollChannelConfig$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollChannelOption found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDatagramChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDatagramChannel$EpollDatagramChannelUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDatagramChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainDatagramChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainDatagramChannel$EpollDomainDatagramChannelUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainDatagramChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainSocketChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainSocketChannel$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainSocketChannel$EpollDomainUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollDomainSocketChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollEventArray found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollEventLoop found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollEventLoop$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollEventLoopGroup found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollMode found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollRecvByteAllocatorHandle found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollRecvByteAllocatorHandle$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollRecvByteAllocatorStreamingHandle found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollServerChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollServerDomainSocketChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollServerSocketChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollServerSocketChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollSocketChannel found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollSocketChannel$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollSocketChannel$EpollSocketChannelUnsafe found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollSocketChannelConfig found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.EpollTcpInfo found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.LinuxSocket found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.Native found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.Native$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.NativeDatagramPacketArray found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.NativeDatagramPacketArray$1 found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.NativeDatagramPacketArray$MyMessageProcessor found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.NativeDatagramPacketArray$NativeDatagramPacket found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.NativeStaticallyReferencedJniMethods found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.SegmentedDatagramPacket found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.epoll.TcpMd5Util found in modules netty-transport-native-epoll-4.1.67-linux-x86_64.Final-linux-x86_64 (io.netty:netty-transport-native-epoll:4.1.67.Final) and netty-transport-native-epoll-4.1.67.Final (io.netty:netty-transport-native-epoll:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueChannel$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueChannel$AbstractKQueueUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueChannel$AbstractKQueueUnsafe$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueChannel$AbstractKQueueUnsafe$2 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueChannel$AbstractKQueueUnsafe$3 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueDatagramChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueServerChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueServerChannel$KQueueServerSocketUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$2 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$3 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$4 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$5 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$KQueueSocketWritableByteChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AbstractKQueueStreamChannel$KQueueStreamUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.AcceptFilter found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.BsdSocket found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueue found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueChannelOption found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDatagramChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDatagramChannel$KQueueDatagramChannelUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDatagramChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainDatagramChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainDatagramChannel$KQueueDomainDatagramChannelUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainDatagramChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainSocketChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainSocketChannel$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainSocketChannel$KQueueDomainUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueDomainSocketChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueEventArray found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueEventLoop found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueEventLoop$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueEventLoopGroup found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueRecvByteAllocatorHandle found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueRecvByteAllocatorHandle$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueServerChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueServerDomainSocketChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueServerSocketChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueServerSocketChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueSocketChannel found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueSocketChannel$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueSocketChannel$KQueueSocketChannelUnsafe found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueSocketChannelConfig found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.KQueueStaticallyReferencedJniMethods found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.Native found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.Native$1 found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class io.netty.channel.kqueue.NativeLongArray found in modules netty-transport-native-kqueue-4.1.67-osx-x86_64.Final-osx-x86_64 (io.netty:netty-transport-native-kqueue:4.1.67.Final) and netty-transport-native-kqueue-4.1.67.Final (io.netty:netty-transport-native-kqueue:4.1.67.Final)
Duplicate class org.apache.commons.logging.Log found in modules commons-logging-1.2 (commons-logging:commons-logging:1.2) and spring-jcl-5.3.12 (org.springframework:spring-jcl:5.3.12)
Duplicate class org.apache.commons.logging.LogFactory found in modules commons-logging-1.2 (commons-logging:commons-logging:1.2) and spring-jcl-5.3.12 (org.springframework:spring-jcl:5.3.12)
Duplicate class org.apache.commons.logging.LogFactory$1 found in modules commons-logging-1.2 (commons-logging:commons-logging:1.2) and spring-jcl-5.3.12 (org.springframework:spring-jcl:5.3.12)
Duplicate class org.apache.commons.logging.impl.NoOpLog found in modules commons-logging-1.2 (commons-logging:commons-logging:1.2) and spring-jcl-5.3.12 (org.springframework:spring-jcl:5.3.12)
Duplicate class org.apache.commons.logging.impl.SimpleLog found in modules commons-logging-1.2 (commons-logging:commons-logging:1.2) and spring-jcl-5.3.12 (org.springframework:spring-jcl:5.3.12)

This is how I implement java-client library:

The way I implement was used from: https://mvnrepository.com/artifact/io.appium/java-client/8.0.0-beta
This is just implemented only java-client 8.0.0-beta and nothing else, I don't even try to paste the code from Appium Inspector.
So does anyone know how to fix this error? I really need some help. Thank you.

Start by reproducing the Android Studio debug build using java-client 8.0.0-beta and inspect the dependency declarations that bring in the two netty-transport-native-epoll modules. Done means the duplicate-class errors no longer appear during the debug build; the issue provides no project files or tests to inspect.