BungeeCord uses BungeeTabListPlus to report errors.
BungeeCord with build sequence 1786 is used, load the BungeeTabListPlus.jar plugin in the plugins folder. When a player enters the server the console keeps brushing the warning
A task raised an exception. Task: codecrafter47.bungeetablistplus.handler.NewTabOverlayHandler$$Lambda$442/0x0000000800f93908@11add290 java.lang.NoSuchMethodError: 'void net.md_5.bungee.protocol.packet.PlayerListItem$Item.setDisplayName(java.lang.String)' at codecrafter47.bungeetablistplus.handler.NewTabOverlayHandler$CustomContentTabOverlayHandler.update(NewTabOverlayHandler.java:742) at codecrafter47.bungeetablistplus.handler.NewTabOverlayHandler.update(NewTabOverlayHandler.java:359) at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:833)
Please use the latest dev build. The version is incorrect, but it is the latest build that should fix this issue.