On receiveing server:

[14:46:21 INFO]: UUID of player Nentify is 12c10b58-28b5-4f64-a6af-98abd443a410
[14:46:21 INFO]: Nentify joined world:world
[14:46:21 INFO]: Nentify[/82.23.11.4:54520] logged in with entity id 1706 at ([world] 504.3289315763694, 145.78033871006937, -122.30000001192093)
[14:46:21 INFO]: [SimpleClans] ClanPlayer Reloaded: Nentify, UUID: 12c10b58-28b5-4f64-a6af-98abd443a410
[14:46:21 INFO]: Nentify lost connection: Internal Exception: java.io.IOException: Connection reset by peer
[14:46:22 INFO]: lobby Nentify

Bungee:

14:46:21 [INFO] [Nentify] <-> ServerConnector [Lobby] has connected
14:46:21 [INFO] [Nentify] <-> DownstreamBridge <-> [Fusion] has disconnected
14:46:21 [SEVERE] [Nentify] <-> DownstreamBridge <-> [Lobby] - encountered exception
java.lang.IllegalArgumentException: Team InCombat already exists in this scoreboard
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:145)
    at net.md_5.bungee.api.score.Scoreboard.addTeam(Scoreboard.java:68)
    at net.md_5.bungee.connection.DownstreamBridge.handle(DownstreamBridge.java:183)
    at net.md_5.bungee.protocol.packet.Team.handle(Team.java:106)
    at net.md_5.bungee.netty.HandlerBoss.channelRead(HandlerBoss.java:75)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:163)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:163)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319)
    at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:150)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:787)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:130)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)
14:46:21 [INFO] [Nentify] disconnected with: IllegalArgumentException : Team InCombat already exists in this scoreboard @ com.google.common.base.Preconditions:145
14:46:21 [INFO] [Nentify] disconnected with: [Proxy] Lost connection to server.
14:46:21 [INFO] [Nentify] <-> DownstreamBridge <-> [Lobby] has disconnected
14:46:21 [INFO] [Nentify] -> UpstreamBridge has disconnected