Players get disconnected with OCM plugin.
And it does error on my Waterfall server.

Information

• Server Version: Paper 1.16.1

• OldCombatMechanics version: 1.8.1

• Server Log File:

Errors on Waterfall:
[17:30:51 ERROR]: [/89.158.144.220:60012|Epsilllion] <-> DownstreamBridge <-> [lobby] - encountered exception
java.lang.IllegalArgumentException: Team ZQOKN_AA2 already exists in this scoreboard
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:191) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at net.md_5.bungee.api.score.Scoreboard.addTeam(Scoreboard.java:73) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at net.md_5.bungee.connection.DownstreamBridge.handle(DownstreamBridge.java:237) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at net.md_5.bungee.protocol.packet.Team.handle(Team.java:124) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at net.md_5.bungee.netty.HandlerBoss.channelRead(HandlerBoss.java:105) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:311) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:425) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:792) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:475) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[Waterfall.jar:git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:6496349:370]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_265]

• OldCombatMechanics config file:

Problem Description

Says team already exist in Bungee logs (Waterfall)

To Reproduce

Steps to reproduce the behavior:

1. Install OCM on Paper 1.16.1 connected on a Waterfall server (latest build)
2. Join the server
3. Another player join the serv, and the player will crash.

You can disable the player-collision module in the meantime to likely work around this.

I don't really want to set up waterfall, but that error message looks interesting.

Problem resolved, thanks!